64531486 has 32 divisors (see below), whose sum is σ = 104976000. Its totient is φ = 29657952.

The previous prime is 64531477. The next prime is 64531501. The reversal of 64531486 is 68413546.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 239760 + ... + 240028.

It is an arithmetic number, because the mean of its divisors is an integer number (3280500).

Almost surely, 2^64531486 is an apocalyptic number.

64531486 is a deficient number, since it is larger than the sum of its proper divisors (40444514).

64531486 is a wasteful number, since it uses less digits than its factorization.

64531486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456.

The product of its digits is 69120, while the sum is 37.

The square root of 64531486 is about 8033.1491956766. The cubic root of 64531486 is about 401.1042114876.

It can be divided in two parts, 645 and 31486, that added together give a triangular number (32131 = T₂₅₃).

The spelling of 64531486 in words is "sixty-four million, five hundred thirty-one thousand, four hundred eighty-six".