64064820 has 24 divisors (see below), whose sum is σ = 179381664. Its totient is φ = 17083936.

The previous prime is 64064809. The next prime is 64064831. The reversal of 64064820 is 2846046.

64064820 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (64064809) and next prime (64064831).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

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, 533814 + ... + 533933.

It is an arithmetic number, because the mean of its divisors is an integer number (7474236).

Almost surely, 2^64064820 is an apocalyptic number.

64064820 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64064820 is an abundant number, since it is smaller than the sum of its proper divisors (115316844).

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

64064820 is a wasteful number, since it uses less digits than its factorization.

64064820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1067759 (or 1067757 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 64064820 is about 8004.0502247300. The cubic root of 64064820 is about 400.1349961017.

The spelling of 64064820 in words is "sixty-four million, sixty-four thousand, eight hundred twenty".