64150690 has 32 divisors (see below), whose sum is σ = 122724720. Its totient is φ = 24059904.

The previous prime is 64150663. The next prime is 64150693. The reversal of 64150690 is 9605146.

It can be written as a sum of positive squares in 8 ways, for example, as 32936121 + 31214569 = 5739^2 + 5587^2 .

It is a super-2 number, since 2×64150690² = 8230622054952200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64150693) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59476 + ... + 60544.

Almost surely, 2^64150690 is an apocalyptic number.

64150690 is a deficient number, since it is larger than the sum of its proper divisors (58574030).

64150690 is a wasteful number, since it uses less digits than its factorization.

64150690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1446.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 64150690 is about 8009.4125876995. The cubic root of 64150690 is about 400.3136914299.

The spelling of 64150690 in words is "sixty-four million, one hundred fifty thousand, six hundred ninety".