64136554 has 8 divisors (see below), whose sum is σ = 97640928. Its totient is φ = 31589580.

The previous prime is 64136543. The next prime is 64136557. The reversal of 64136554 is 45563146.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×64136554² = 8226995117989832, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64136557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 239182 + ... + 239449.

It is an arithmetic number, because the mean of its divisors is an integer number (12205116).

Almost surely, 2^64136554 is an apocalyptic number.

64136554 is a deficient number, since it is larger than the sum of its proper divisors (33504374).

64136554 is a wasteful number, since it uses less digits than its factorization.

64136554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478700.

The product of its digits is 43200, while the sum is 34.

The square root of 64136554 is about 8008.5300773613. The cubic root of 64136554 is about 400.2842854067.

The spelling of 64136554 in words is "sixty-four million, one hundred thirty-six thousand, five hundred fifty-four".