814563960 has 64 divisors (see below), whose sum is σ = 2792793600. Its totient is φ = 186185856.

The previous prime is 814563949. The next prime is 814563979. The reversal of 814563960 is 69365418.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 484020 + ... + 485699.

It is an arithmetic number, because the mean of its divisors is an integer number (43637400).

Almost surely, 2^814563960 is an apocalyptic number.

It is an amenable number.

814563960 is an abundant number, since it is smaller than the sum of its proper divisors (1978229640).

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

814563960 is a wasteful number, since it uses less digits than its factorization.

814563960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 969740 (or 969736 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 814563960 is about 28540.5669179854. The cubic root of 814563960 is about 933.9172496907.

The spelling of 814563960 in words is "eight hundred fourteen million, five hundred sixty-three thousand, nine hundred sixty".