626021404 has 12 divisors (see below), whose sum is σ = 1097917128. Its totient is φ = 312330800.

The previous prime is 626021399. The next prime is 626021423. The reversal of 626021404 is 404120626.

It is a super-2 number, since 2×626021404² = 783805596532262432, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167902 + ... + 171589.

It is an arithmetic number, because the mean of its divisors is an integer number (91493094).

Almost surely, 2^626021404 is an apocalyptic number.

It is an amenable number.

626021404 is a deficient number, since it is larger than the sum of its proper divisors (471895724).

626021404 is a wasteful number, since it uses less digits than its factorization.

626021404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339956 (or 339954 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 626021404 is about 25020.4197406838. The cubic root of 626021404 is about 855.4534735222.

The spelling of 626021404 in words is "six hundred twenty-six million, twenty-one thousand, four hundred four".