620661201 has 32 divisors (see below), whose sum is σ = 885479040. Its totient is φ = 385588224.

The previous prime is 620661113. The next prime is 620661227. The reversal of 620661201 is 102166026.

It is not a de Polignac number, because 620661201 - 2¹³ = 620653009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (620661901) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1114015 + ... + 1114571.

It is an arithmetic number, because the mean of its divisors is an integer number (27671220).

Almost surely, 2^620661201 is an apocalyptic number.

It is an amenable number.

620661201 is a deficient number, since it is larger than the sum of its proper divisors (264817839).

620661201 is a wasteful number, since it uses less digits than its factorization.

620661201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 865.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 620661201 is about 24913.0728935633. The cubic root of 620661201 is about 853.0049128668.

The spelling of 620661201 in words is "six hundred twenty million, six hundred sixty-one thousand, two hundred one".