627421406 has 4 divisors (see below), whose sum is σ = 941132112. Its totient is φ = 313710702.

The previous prime is 627421387. The next prime is 627421447. The reversal of 627421406 is 604124726.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156855350 + ... + 156855353.

It is an arithmetic number, because the mean of its divisors is an integer number (235283028).

Almost surely, 2^627421406 is an apocalyptic number.

627421406 is a deficient number, since it is larger than the sum of its proper divisors (313710706).

627421406 is a wasteful number, since it uses less digits than its factorization.

627421406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313710705.

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 627421406 is about 25048.3813049866. The cubic root of 627421406 is about 856.0906960922.

The spelling of 627421406 in words is "six hundred twenty-seven million, four hundred twenty-one thousand, four hundred six".