64621488 has 40 divisors (see below), whose sum is σ = 176761008. Its totient is φ = 20273152.

The previous prime is 64621481. The next prime is 64621511. The reversal of 64621488 is 88412646.

64621488 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×64621488² = 8351873422668288, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (64621481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38781 + ... + 40412.

Almost surely, 2^64621488 is an apocalyptic number.

64621488 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

64621488 is an abundant number, since it is smaller than the sum of its proper divisors (112139520).

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

64621488 is a wasteful number, since it uses less digits than its factorization.

64621488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79221 (or 79215 counting only the distinct ones).

The product of its digits is 73728, while the sum is 39.

The square root of 64621488 is about 8038.7491564297. The cubic root of 64621488 is about 401.2905980797.

The spelling of 64621488 in words is "sixty-four million, six hundred twenty-one thousand, four hundred eighty-eight".