620774493 has 16 divisors (see below), whose sum is σ = 879386880. Its totient is φ = 388777536.

The previous prime is 620774477. The next prime is 620774503. The reversal of 620774493 is 394477026.

It is not a de Polignac number, because 620774493 - 2⁴ = 620774477 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620774423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93205 + ... + 99642.

It is an arithmetic number, because the mean of its divisors is an integer number (54961680).

Almost surely, 2^620774493 is an apocalyptic number.

It is an amenable number.

620774493 is a deficient number, since it is larger than the sum of its proper divisors (258612387).

620774493 is a wasteful number, since it uses less digits than its factorization.

620774493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192916.

The product of its (nonzero) digits is 254016, while the sum is 42.

The square root of 620774493 is about 24915.3465358200. The cubic root of 620774493 is about 853.0568106134.

The spelling of 620774493 in words is "six hundred twenty million, seven hundred seventy-four thousand, four hundred ninety-three".