620392 has 8 divisors (see below), whose sum is σ = 1163250. Its totient is φ = 310192.

The previous prime is 620383. The next prime is 620393. The reversal of 620392 is 293026.

It can be written as a sum of positive squares in only one way, i.e., 599076 + 21316 = 774^2 + 146^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (620393) by changing a digit.

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 as a sum of consecutive naturals, namely, 38767 + ... + 38782.

2⁶²⁰³⁹² is an apocalyptic number.

It is an amenable number.

620392 is a deficient number, since it is larger than the sum of its proper divisors (542858).

620392 is a wasteful number, since it uses less digits than its factorization.

620392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77555 (or 77551 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 620392 is about 787.6496683171. The cubic root of 620392 is about 85.2881569685.

The spelling of 620392 in words is "six hundred twenty thousand, three hundred ninety-two".