6902452561 has 9 divisors (see below), whose sum is σ = 6951061929. Its totient is φ = 6854182500.

The previous prime is 6902452553. The next prime is 6902452607. The reversal of 6902452561 is 1652542096.

The square root of 6902452561 is 83081.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 6902452561 - 2³ = 6902452553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6902452961) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 20853166 + ... + 20853496.

Almost surely, 2^6902452561 is an apocalyptic number.

6902452561 is the 83081-st square number.

6902452561 is the 41541-st centered octagonal number.

It is an amenable number.

6902452561 is a deficient number, since it is larger than the sum of its proper divisors (48609368).

6902452561 is an frugal number, since it uses more digits than its factorization.

6902452561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1164 (or 582 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 40.

The cubic root of 6902452561 is about 1904.0037971915.

Multiplying 6902452561 by its product of nonzero digits (129600), we get a square (894557851905600 = 29909160²).

The spelling of 6902452561 in words is "six billion, nine hundred two million, four hundred fifty-two thousand, five hundred sixty-one".