620671678 has 12 divisors (see below), whose sum is σ = 1023339240. Its totient is φ = 282123380.

The previous prime is 620671661. The next prime is 620671697. The reversal of 620671678 is 876176026.

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 5 ways as a sum of consecutive naturals, for example, 1282138 + ... + 1282621.

It is an arithmetic number, because the mean of its divisors is an integer number (85278270).

Almost surely, 2^620671678 is an apocalyptic number.

620671678 is a deficient number, since it is larger than the sum of its proper divisors (402667562).

620671678 is a wasteful number, since it uses less digits than its factorization.

620671678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2564783 (or 2564772 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 43.

The square root of 620671678 is about 24913.2831638064. The cubic root of 620671678 is about 853.0097125235.

The spelling of 620671678 in words is "six hundred twenty million, six hundred seventy-one thousand, six hundred seventy-eight".