626297940 has 48 divisors (see below), whose sum is σ = 1948484160. Its totient is φ = 167012640.

The previous prime is 626297933. The next prime is 626297957. The reversal of 626297940 is 49792626.

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 579366 + ... + 580445.

It is an arithmetic number, because the mean of its divisors is an integer number (40593420).

Almost surely, 2^626297940 is an apocalyptic number.

626297940 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

626297940 is an abundant number, since it is smaller than the sum of its proper divisors (1322186220).

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

626297940 is a wasteful number, since it uses less digits than its factorization.

626297940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1159829 (or 1159821 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 45.

The square root of 626297940 is about 25025.9453367900. The cubic root of 626297940 is about 855.5794164244.

The spelling of 626297940 in words is "six hundred twenty-six million, two hundred ninety-seven thousand, nine hundred forty".