64145487 has 16 divisors (see below), whose sum is σ = 97977600. Its totient is φ = 36567552.

The previous prime is 64145441. The next prime is 64145489. The reversal of 64145487 is 78454146.

It is not a de Polignac number, because 64145487 - 2⁷ = 64145359 is a prime.

It is a super-2 number, since 2×64145487² = 8229287004934338, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64145489) 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, 6028 + ... + 12830.

It is an arithmetic number, because the mean of its divisors is an integer number (6123600).

Almost surely, 2^64145487 is an apocalyptic number.

64145487 is a deficient number, since it is larger than the sum of its proper divisors (33832113).

64145487 is a wasteful number, since it uses less digits than its factorization.

64145487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7262.

The product of its digits is 107520, while the sum is 39.

The square root of 64145487 is about 8009.0877757707. The cubic root of 64145487 is about 400.3028685354.

The spelling of 64145487 in words is "sixty-four million, one hundred forty-five thousand, four hundred eighty-seven".