420758864 has 10 divisors (see below), whose sum is σ = 815220330. Its totient is φ = 210379424.

The previous prime is 420758843. The next prime is 420758867. The reversal of 420758864 is 468857024.

It can be written as a sum of positive squares in only one way, i.e., 410467600 + 10291264 = 20260^2 + 3208^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420758867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13148699 + ... + 13148730.

It is an arithmetic number, because the mean of its divisors is an integer number (81522033).

Almost surely, 2^420758864 is an apocalyptic number.

It is an amenable number.

420758864 is a deficient number, since it is larger than the sum of its proper divisors (394461466).

420758864 is a wasteful number, since it uses less digits than its factorization.

420758864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26297437 (or 26297431 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 44.

The square root of 420758864 is about 20512.4075622536. The cubic root of 420758864 is about 749.3380019241.

The spelling of 420758864 in words is "four hundred twenty million, seven hundred fifty-eight thousand, eight hundred sixty-four".