64122790 has 16 divisors (see below), whose sum is σ = 115536960. Its totient is φ = 25623360.

The previous prime is 64122769. The next prime is 64122791. The reversal of 64122790 is 9722146.

It is a super-2 number, since 2×64122790² = 8223464394768200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64122791) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9706 + ... + 14914.

It is an arithmetic number, because the mean of its divisors is an integer number (7221060).

Almost surely, 2^64122790 is an apocalyptic number.

64122790 is a deficient number, since it is larger than the sum of its proper divisors (51414170).

64122790 is a wasteful number, since it uses less digits than its factorization.

64122790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6447.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 64122790 is about 8007.6706975250. The cubic root of 64122790 is about 400.2556490741.

The spelling of 64122790 in words is "sixty-four million, one hundred twenty-two thousand, seven hundred ninety".