64264020 has 24 divisors (see below), whose sum is σ = 179939424. Its totient is φ = 17137056.

The previous prime is 64264019. The next prime is 64264021. The reversal of 64264020 is 2046246.

It is an interprime number because it is at equal distance from previous prime (64264019) and next prime (64264021).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64264021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 535474 + ... + 535593.

It is an arithmetic number, because the mean of its divisors is an integer number (7497476).

Almost surely, 2^64264020 is an apocalyptic number.

64264020 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64264020 is an abundant number, since it is smaller than the sum of its proper divisors (115675404).

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

64264020 is a wasteful number, since it uses less digits than its factorization.

64264020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1071079 (or 1071077 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 64264020 is about 8016.4842668092. The cubic root of 64264020 is about 400.5492870308.

The spelling of 64264020 in words is "sixty-four million, two hundred sixty-four thousand, twenty".