621392 has 20 divisors (see below), whose sum is σ = 1223136. Its totient is φ = 305760.

The previous prime is 621389. The next prime is 621419. The reversal of 621392 is 293126.

621392 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×621392² = 772256035328, which contains 22 as substring.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 621392.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 863 + ... + 1409.

2⁶²¹³⁹² is an apocalyptic number.

It is an amenable number.

621392 is a deficient number, since it is larger than the sum of its proper divisors (601744).

621392 is a wasteful number, since it uses less digits than its factorization.

621392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 626 (or 620 counting only the distinct ones).

The product of its digits is 648, while the sum is 23.

The square root of 621392 is about 788.2842127050. The cubic root of 621392 is about 85.3339572437. Note that the first 3 decimals are identical.

The spelling of 621392 in words is "six hundred twenty-one thousand, three hundred ninety-two".