64827636 has 12 divisors (see below), whose sum is σ = 151264512. Its totient is φ = 21609208.

The previous prime is 64827629. The next prime is 64827643. The reversal of 64827636 is 63672846.

It is an interprime number because it is at equal distance from previous prime (64827629) and next prime (64827643).

It is a tau number, because it is divible by the number of its divisors (12).

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, 2701140 + ... + 2701163.

It is an arithmetic number, because the mean of its divisors is an integer number (12605376).

Almost surely, 2^64827636 is an apocalyptic number.

It is an amenable number.

64827636 is an abundant number, since it is smaller than the sum of its proper divisors (86436876).

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

64827636 is a wasteful number, since it uses less digits than its factorization.

64827636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5402310 (or 5402308 counting only the distinct ones).

The product of its digits is 290304, while the sum is 42.

The square root of 64827636 is about 8051.5610908693. The cubic root of 64827636 is about 401.7168620851.

The spelling of 64827636 in words is "sixty-four million, eight hundred twenty-seven thousand, six hundred thirty-six".