623901420 has 48 divisors (see below), whose sum is σ = 1941028320. Its totient is φ = 166373568.

The previous prime is 623901409. The next prime is 623901431. The reversal of 623901420 is 24109326.

623901420 is a `hidden beast` number, since 6 + 239 + 0 + 1 + 420 = 666.

It is an interprime number because it is at equal distance from previous prime (623901409) and next prime (623901431).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 577147 + ... + 578226.

It is an arithmetic number, because the mean of its divisors is an integer number (40438090).

Almost surely, 2^623901420 is an apocalyptic number.

623901420 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

623901420 is an abundant number, since it is smaller than the sum of its proper divisors (1317126900).

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

623901420 is a wasteful number, since it uses less digits than its factorization.

623901420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1155391 (or 1155383 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 623901420 is about 24978.0187364811. The cubic root of 623901420 is about 854.4867341093.

The spelling of 623901420 in words is "six hundred twenty-three million, nine hundred one thousand, four hundred twenty".