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68950949 = 431159979
BaseRepresentation
bin1000001110000…
…01101110100101
311210202001220212
410013001232211
5120122412244
610501505205
71465034114
oct407015645
9153661825
1068950949
1135a14961
121b112205
13113921a2
14922bc7b
1560bed9e
hex41c1ba5

68950949 has 4 divisors (see below), whose sum is σ = 69111360. Its totient is φ = 68790540.

The previous prime is 68950939. The next prime is 68950957. The reversal of 68950949 is 94905986.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 68950949 - 212 = 68946853 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68950897 and 68950906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68950919) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79559 + ... + 80420.

It is an arithmetic number, because the mean of its divisors is an integer number (17277840).

Almost surely, 268950949 is an apocalyptic number.

It is an amenable number.

68950949 is a deficient number, since it is larger than the sum of its proper divisors (160411).

68950949 is a wasteful number, since it uses less digits than its factorization.

68950949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160410.

The product of its (nonzero) digits is 699840, while the sum is 50.

The square root of 68950949 is about 8303.6708147662. The cubic root of 68950949 is about 410.0593786695.

The spelling of 68950949 in words is "sixty-eight million, nine hundred fifty thousand, nine hundred forty-nine".

Divisors: 1 431 159979 68950949