64555340 has 12 divisors (see below), whose sum is σ = 135566256. Its totient is φ = 25822128.

The previous prime is 64555339. The next prime is 64555357. The reversal of 64555340 is 4355546.

It is a junction number, because it is equal to n+sod(n) for n = 64555297 and 64555306.

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, 1613864 + ... + 1613903.

It is an arithmetic number, because the mean of its divisors is an integer number (11297188).

Almost surely, 2^64555340 is an apocalyptic number.

It is an amenable number.

64555340 is an abundant number, since it is smaller than the sum of its proper divisors (71010916).

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

64555340 is a wasteful number, since it uses less digits than its factorization.

64555340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3227776 (or 3227774 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 32.

The square root of 64555340 is about 8034.6337813244. The cubic root of 64555340 is about 401.1536279909.

The spelling of 64555340 in words is "sixty-four million, five hundred fifty-five thousand, three hundred forty".