64689542 has 16 divisors (see below), whose sum is σ = 100342800. Its totient is φ = 31254048.

The previous prime is 64689487. The next prime is 64689563. The reversal of 64689542 is 24598646.

It is a junction number, because it is equal to n+sod(n) for n = 64689493 and 64689502.

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, 8093 + ... + 13959.

It is an arithmetic number, because the mean of its divisors is an integer number (6271425).

Almost surely, 2^64689542 is an apocalyptic number.

64689542 is a deficient number, since it is larger than the sum of its proper divisors (35653258).

64689542 is a wasteful number, since it uses less digits than its factorization.

64689542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6055.

The product of its digits is 414720, while the sum is 44.

The square root of 64689542 is about 8042.9809150588. The cubic root of 64689542 is about 401.4314173341.

The spelling of 64689542 in words is "sixty-four million, six hundred eighty-nine thousand, five hundred forty-two".