620434659 has 48 divisors (see below), whose sum is σ = 927590400. Its totient is φ = 368484480.

The previous prime is 620434657. The next prime is 620434663. The reversal of 620434659 is 956434026.

It is not a de Polignac number, because 620434659 - 2¹ = 620434657 is a prime.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620434657) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3248254 + ... + 3248444.

It is an arithmetic number, because the mean of its divisors is an integer number (19324800).

Almost surely, 2^620434659 is an apocalyptic number.

620434659 is a deficient number, since it is larger than the sum of its proper divisors (307155741).

620434659 is a wasteful number, since it uses less digits than its factorization.

620434659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412 (or 399 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 39.

The square root of 620434659 is about 24908.5258295227. The cubic root of 620434659 is about 852.9011176698.

The spelling of 620434659 in words is "six hundred twenty million, four hundred thirty-four thousand, six hundred fifty-nine".