64123016 has 16 divisors (see below), whose sum is σ = 123163740. Its totient is φ = 31279360.

The previous prime is 64123013. The next prime is 64123021. The reversal of 64123016 is 61032146.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 49758916 + 14364100 = 7054^2 + 3790^2 .

It is a super-2 number, since 2×64123016² = 8223522361872512, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 64122982 and 64123000.

It is not an unprimeable number, because it can be changed into a prime (64123013) 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 3 ways as a sum of consecutive naturals, for example, 97421 + ... + 98076.

Almost surely, 2^64123016 is an apocalyptic number.

It is an amenable number.

64123016 is a deficient number, since it is larger than the sum of its proper divisors (59040724).

64123016 is a wasteful number, since it uses less digits than its factorization.

64123016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195544 (or 195540 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 64123016 is about 8007.6848089819. The cubic root of 64123016 is about 400.2561193056.

The spelling of 64123016 in words is "sixty-four million, one hundred twenty-three thousand, sixteen".