64685242 has 4 divisors (see below), whose sum is σ = 97027866. Its totient is φ = 32342620.

The previous prime is 64685209. The next prime is 64685263. The reversal of 64685242 is 24258646.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 56385081 + 8300161 = 7509^2 + 2881^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16171309 + ... + 16171312.

Almost surely, 2^64685242 is an apocalyptic number.

64685242 is a deficient number, since it is larger than the sum of its proper divisors (32342624).

64685242 is a wasteful number, since it uses less digits than its factorization.

64685242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32342623.

The product of its digits is 92160, while the sum is 37.

The square root of 64685242 is about 8042.7135967906. The cubic root of 64685242 is about 401.4225225768.

The spelling of 64685242 in words is "sixty-four million, six hundred eighty-five thousand, two hundred forty-two".