2628404641 has 8 divisors (see below), whose sum is σ = 2685634560. Its totient is φ = 2571229248.

The previous prime is 2628404633. The next prime is 2628404659. The reversal of 2628404641 is 1464048262.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2628404641 - 2³ = 2628404633 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2628404641.

It is not an unprimeable number, because it can be changed into a prime (2628404941) 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, 92745 + ... + 117721.

It is an arithmetic number, because the mean of its divisors is an integer number (335704320).

Almost surely, 2^2628404641 is an apocalyptic number.

It is an amenable number.

2628404641 is a deficient number, since it is larger than the sum of its proper divisors (57229919).

2628404641 is a wasteful number, since it uses less digits than its factorization.

2628404641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27263.

The product of its (nonzero) digits is 73728, while the sum is 37.

The square root of 2628404641 is about 51267.9689572349. The cubic root of 2628404641 is about 1380.0582207811.

The spelling of 2628404641 in words is "two billion, six hundred twenty-eight million, four hundred four thousand, six hundred forty-one".