654298961 has 4 divisors (see below), whose sum is σ = 654589092. Its totient is φ = 654008832.

The previous prime is 654298949. The next prime is 654299011. The reversal of 654298961 is 169892456.

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

It can be written as a sum of positive squares in 2 ways, for example, as 543123025 + 111175936 = 23305^2 + 10544^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-654298961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (654298061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 141656 + ... + 146201.

It is an arithmetic number, because the mean of its divisors is an integer number (163647273).

Almost surely, 2^654298961 is an apocalyptic number.

It is an amenable number.

654298961 is a deficient number, since it is larger than the sum of its proper divisors (290131).

654298961 is a wasteful number, since it uses less digits than its factorization.

654298961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290130.

The product of its digits is 933120, while the sum is 50.

The square root of 654298961 is about 25579.2681873427. The cubic root of 654298961 is about 868.1446173454.

The spelling of 654298961 in words is "six hundred fifty-four million, two hundred ninety-eight thousand, nine hundred sixty-one".