626706740 has 48 divisors (see below), whose sum is σ = 1474550784. Its totient is φ = 221731200.

The previous prime is 626706719. The next prime is 626706779. The reversal of 626706740 is 47607626.

It is a happy number.

It is a super-2 number, since 2×626706740² = 785522675922855200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 626706694 and 626706703.

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, 30356 + ... + 46635.

It is an arithmetic number, because the mean of its divisors is an integer number (30719808).

Almost surely, 2^626706740 is an apocalyptic number.

It is an amenable number.

626706740 is an abundant number, since it is smaller than the sum of its proper divisors (847844044).

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

626706740 is a wasteful number, since it uses less digits than its factorization.

626706740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77048 (or 77046 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 38.

The square root of 626706740 is about 25034.1115280731. Note that the first 3 decimals coincide. The cubic root of 626706740 is about 855.7655284815.

The spelling of 626706740 in words is "six hundred twenty-six million, seven hundred six thousand, seven hundred forty".