623377920 has 320 divisors, whose sum is σ = 2234428416. Its totient is φ = 146964480.

The previous prime is 623377919. The next prime is 623377921. The reversal of 623377920 is 29773326.

It is an interprime number because it is at equal distance from previous prime (623377919) and next prime (623377921).

It is a tau number, because it is divible by the number of its divisors (320).

It is a super-2 number, since 2×623377920² = 777200062287052800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623377921) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3970482 + ... + 3970638.

Almost surely, 2^623377920 is an apocalyptic number.

623377920 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 623377920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1117214208).

623377920 is an abundant number, since it is smaller than the sum of its proper divisors (1611050496).

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

623377920 is a wasteful number, since it uses less digits than its factorization.

623377920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241 (or 225 counting only the distinct ones).

The product of its (nonzero) digits is 95256, while the sum is 39.

The square root of 623377920 is about 24967.5373234927. The cubic root of 623377920 is about 854.2476744534.

The spelling of 623377920 in words is "six hundred twenty-three million, three hundred seventy-seven thousand, nine hundred twenty".