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68772053 = 757717027
BaseRepresentation
bin1000001100101…
…10000011010101
311210101222112002
410012112003111
5120101201203
610454005045
71463360420
oct406260325
9153358462
1068772053
1135902509
121b046785
131132b92c
1491c29b7
156086d88
hex41960d5

68772053 has 8 divisors (see below), whose sum is σ = 78737472. Its totient is φ = 58841856.

The previous prime is 68772049. The next prime is 68772101. The reversal of 68772053 is 35027786.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68772053 - 22 = 68772049 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68771998 and 68772016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68772013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4475 + ... + 12552.

It is an arithmetic number, because the mean of its divisors is an integer number (9842184).

Almost surely, 268772053 is an apocalyptic number.

It is an amenable number.

68772053 is a deficient number, since it is larger than the sum of its proper divisors (9965419).

68772053 is a wasteful number, since it uses less digits than its factorization.

68772053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17611.

The product of its (nonzero) digits is 70560, while the sum is 38.

The square root of 68772053 is about 8292.8917151980. The cubic root of 68772053 is about 409.7044330224.

The spelling of 68772053 in words is "sixty-eight million, seven hundred seventy-two thousand, fifty-three".

Divisors: 1 7 577 4039 17027 119189 9824579 68772053