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68398495 = 5111243609
BaseRepresentation
bin1000001001110…
…10110110011111
311202201000002121
410010322312133
5120002222440
610442003411
71460243344
oct404726637
9152630077
1068398495
1135677890
121aaa6567
131122a8a9
1491267cb
15601134a
hex413ad9f

68398495 has 8 divisors (see below), whose sum is σ = 89539920. Its totient is φ = 49744320.

The previous prime is 68398469. The next prime is 68398529. The reversal of 68398495 is 59489386.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2k-68398495 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 621750 + ... + 621859.

It is an arithmetic number, because the mean of its divisors is an integer number (11192490).

Almost surely, 268398495 is an apocalyptic number.

68398495 is a deficient number, since it is larger than the sum of its proper divisors (21141425).

68398495 is a wasteful number, since it uses less digits than its factorization.

68398495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1243625.

The product of its digits is 1866240, while the sum is 52.

The square root of 68398495 is about 8270.3382639406. The cubic root of 68398495 is about 408.9612710741.

The spelling of 68398495 in words is "sixty-eight million, three hundred ninety-eight thousand, four hundred ninety-five".

Divisors: 1 5 11 55 1243609 6218045 13679699 68398495