620260665 has 16 divisors (see below), whose sum is σ = 1035566208. Its totient is φ = 316422656.

The previous prime is 620260661. The next prime is 620260721. The reversal of 620260665 is 566062026.

It is a cyclic number.

It is not a de Polignac number, because 620260665 - 2² = 620260661 is a prime.

It is not an unprimeable number, because it can be changed into a prime (620260661) 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, 898584 + ... + 899273.

It is an arithmetic number, because the mean of its divisors is an integer number (64722888).

Almost surely, 2^620260665 is an apocalyptic number.

It is an amenable number.

620260665 is a deficient number, since it is larger than the sum of its proper divisors (415305543).

620260665 is a wasteful number, since it uses less digits than its factorization.

620260665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1797888.

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 620260665 is about 24905.0329250937. The cubic root of 620260665 is about 852.8213813379.

The spelling of 620260665 in words is "six hundred twenty million, two hundred sixty thousand, six hundred sixty-five".