2556362698 has 4 divisors (see below), whose sum is σ = 3834544050. Its totient is φ = 1278181348.

The previous prime is 2556362681. The next prime is 2556362707. The reversal of 2556362698 is 8962636552.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2378220289 + 178142409 = 48767^2 + 13347^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 639090673 + ... + 639090676.

Almost surely, 2^2556362698 is an apocalyptic number.

2556362698 is a deficient number, since it is larger than the sum of its proper divisors (1278181352).

2556362698 is a wasteful number, since it uses less digits than its factorization.

2556362698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1278181351.

The product of its digits is 4665600, while the sum is 52.

The square root of 2556362698 is about 50560.4855395990. The cubic root of 2556362698 is about 1367.3325649506.

The spelling of 2556362698 in words is "two billion, five hundred fifty-six million, three hundred sixty-two thousand, six hundred ninety-eight".