64542356 has 12 divisors (see below), whose sum is σ = 116002068. Its totient is φ = 31398912.

The previous prime is 64542349. The next prime is 64542409. The reversal of 64542356 is 65324546.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 34621456 + 29920900 = 5884^2 + 5470^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 217901 + ... + 218196.

It is an arithmetic number, because the mean of its divisors is an integer number (9666839).

Almost surely, 2^64542356 is an apocalyptic number.

It is an amenable number.

64542356 is a deficient number, since it is larger than the sum of its proper divisors (51459712).

64542356 is a wasteful number, since it uses less digits than its factorization.

64542356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436138 (or 436136 counting only the distinct ones).

The product of its digits is 86400, while the sum is 35.

The square root of 64542356 is about 8033.8257387125. The cubic root of 64542356 is about 401.1267315434.

The spelling of 64542356 in words is "sixty-four million, five hundred forty-two thousand, three hundred fifty-six".