260621604 has 24 divisors (see below), whose sum is σ = 675685920. Its totient is φ = 86873832.

The previous prime is 260621597. The next prime is 260621609. The reversal of 260621604 is 406126062.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (260621609) 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, 1206474 + ... + 1206689.

It is an arithmetic number, because the mean of its divisors is an integer number (28153580).

Almost surely, 2^260621604 is an apocalyptic number.

It is an amenable number.

260621604 is an abundant number, since it is smaller than the sum of its proper divisors (415064316).

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

260621604 is a wasteful number, since it uses less digits than its factorization.

260621604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2413176 (or 2413168 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 260621604 is about 16143.7791114720. The cubic root of 260621604 is about 638.7586648437.

Adding to 260621604 its reverse (406126062), we get a palindrome (666747666).

The spelling of 260621604 in words is "two hundred sixty million, six hundred twenty-one thousand, six hundred four".