620408254 has 16 divisors (see below), whose sum is σ = 980905680. Its totient is φ = 293483520.

The previous prime is 620408249. The next prime is 620408263. The reversal of 620408254 is 452804026.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18814 + ... + 39934.

It is an arithmetic number, because the mean of its divisors is an integer number (61306605).

Almost surely, 2^620408254 is an apocalyptic number.

620408254 is a deficient number, since it is larger than the sum of its proper divisors (360497426).

620408254 is a wasteful number, since it uses less digits than its factorization.

620408254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21915.

The product of its (nonzero) digits is 15360, while the sum is 31.

The square root of 620408254 is about 24907.9957844866. The cubic root of 620408254 is about 852.8890179946.

The spelling of 620408254 in words is "six hundred twenty million, four hundred eight thousand, two hundred fifty-four".