2665628457 has 8 divisors (see below), whose sum is σ = 3554431776. Its totient is φ = 1776955392.

The previous prime is 2665628431. The next prime is 2665628477. The reversal of 2665628457 is 7548265662.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2665628457 - 2¹⁴ = 2665612073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2665628417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35538 + ... + 81204.

It is an arithmetic number, because the mean of its divisors is an integer number (444303972).

Almost surely, 2^2665628457 is an apocalyptic number.

It is an amenable number.

2665628457 is a deficient number, since it is larger than the sum of its proper divisors (888803319).

2665628457 is a wasteful number, since it uses less digits than its factorization.

2665628457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65127.

The product of its digits is 4838400, while the sum is 51.

The square root of 2665628457 is about 51629.7245489456. The cubic root of 2665628457 is about 1386.5425617468.

The spelling of 2665628457 in words is "two billion, six hundred sixty-five million, six hundred twenty-eight thousand, four hundred fifty-seven".