626673642 has 48 divisors (see below), whose sum is σ = 1460920032. Its totient is φ = 178688160.

The previous prime is 626673629. The next prime is 626673659. The reversal of 626673642 is 246376626.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 626673594 and 626673603.

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, 166008 + ... + 169740.

It is an arithmetic number, because the mean of its divisors is an integer number (30435834).

Almost surely, 2^626673642 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 626673642, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (730460016).

626673642 is an abundant number, since it is smaller than the sum of its proper divisors (834246390).

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

626673642 is a wasteful number, since it uses less digits than its factorization.

626673642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4323 (or 4316 counting only the distinct ones).

The product of its digits is 435456, while the sum is 42.

The square root of 626673642 is about 25033.4504613327. The cubic root of 626673642 is about 855.7504631544.

The spelling of 626673642 in words is "six hundred twenty-six million, six hundred seventy-three thousand, six hundred forty-two".