64406552 has 16 divisors (see below), whose sum is σ = 138014160. Its totient is φ = 27602784.

The previous prime is 64406539. The next prime is 64406579. The reversal of 64406552 is 25560446.

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, 575003 + ... + 575114.

It is an arithmetic number, because the mean of its divisors is an integer number (8625885).

Almost surely, 2^64406552 is an apocalyptic number.

It is an amenable number.

64406552 is an abundant number, since it is smaller than the sum of its proper divisors (73607608).

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

64406552 is a wasteful number, since it uses less digits than its factorization.

64406552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1150130 (or 1150126 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 32.

The square root of 64406552 is about 8025.3692749929. The cubic root of 64406552 is about 400.8451961840.

Adding to 64406552 its reverse (25560446), we get a palindrome (89966998).

The spelling of 64406552 in words is "sixty-four million, four hundred six thousand, five hundred fifty-two".