64123494 has 16 divisors (see below), whose sum is σ = 133823232. Its totient is φ = 20445128.

The previous prime is 64123487. The next prime is 64123513. The reversal of 64123494 is 49432146.

It is a super-2 number, since 2×64123494² = 8223644965536072, which contains 22 as substring.

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, 232194 + ... + 232469.

It is an arithmetic number, because the mean of its divisors is an integer number (8363952).

Almost surely, 2^64123494 is an apocalyptic number.

64123494 is an abundant number, since it is smaller than the sum of its proper divisors (69699738).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64123494 is a wasteful number, since it uses less digits than its factorization.

64123494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464691.

The product of its digits is 20736, while the sum is 33.

The square root of 64123494 is about 8007.7146552559. The cubic root of 64123494 is about 400.2571138624.

The spelling of 64123494 in words is "sixty-four million, one hundred twenty-three thousand, four hundred ninety-four".