64723542 has 16 divisors (see below), whose sum is σ = 139404720. Its totient is φ = 19914912.

The previous prime is 64723537. The next prime is 64723577. The reversal of 64723542 is 24532746.

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, 414817 + ... + 414972.

It is an arithmetic number, because the mean of its divisors is an integer number (8712795).

Almost surely, 2^64723542 is an apocalyptic number.

64723542 is an abundant number, since it is smaller than the sum of its proper divisors (74681178).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64723542 is a wasteful number, since it uses less digits than its factorization.

64723542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 829807.

The product of its digits is 40320, while the sum is 33.

The square root of 64723542 is about 8045.0942816104. The cubic root of 64723542 is about 401.5017340978.

The spelling of 64723542 in words is "sixty-four million, seven hundred twenty-three thousand, five hundred forty-two".