620036646 has 32 divisors (see below), whose sum is σ = 1291062240. Its totient is φ = 198272256.

The previous prime is 620036609. The next prime is 620036663. The reversal of 620036646 is 646630026.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15970 + ... + 38666.

It is an arithmetic number, because the mean of its divisors is an integer number (40345695).

Almost surely, 2^620036646 is an apocalyptic number.

620036646 is an abundant number, since it is smaller than the sum of its proper divisors (671025594).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

620036646 is a wasteful number, since it uses less digits than its factorization.

620036646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22888.

The product of its (nonzero) digits is 31104, while the sum is 33.

The square root of 620036646 is about 24900.5350544923. The cubic root of 620036646 is about 852.7186980583.

The spelling of 620036646 in words is "six hundred twenty million, thirty-six thousand, six hundred forty-six".