626561040 has 120 divisors (see below), whose sum is σ = 2259498240. Its totient is φ = 143211264.

The previous prime is 626561021. The next prime is 626561053. The reversal of 626561040 is 40165626.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 626560989 and 626561007.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14880 + ... + 38399.

It is an arithmetic number, because the mean of its divisors is an integer number (18829152).

Almost surely, 2^626561040 is an apocalyptic number.

626561040 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

626561040 is an abundant number, since it is smaller than the sum of its proper divisors (1632937200).

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

626561040 is a wasteful number, since it uses less digits than its factorization.

626561040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53309 (or 53296 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 626561040 is about 25031.2013295407. The cubic root of 626561040 is about 855.6992057539.

The spelling of 626561040 in words is "six hundred twenty-six million, five hundred sixty-one thousand, forty".