65456604661 has 8 divisors (see below), whose sum is σ = 74819359424. Its totient is φ = 56096802720.

The previous prime is 65456604649. The next prime is 65456604677. The reversal of 65456604661 is 16640665456.

It is a happy number.

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

It is not a de Polignac number, because 65456604661 - 2²¹ = 65454507509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65456614661) 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, 690495 + ... + 779548.

It is an arithmetic number, because the mean of its divisors is an integer number (9352419928).

Almost surely, 2^65456604661 is an apocalyptic number.

It is an amenable number.

65456604661 is a deficient number, since it is larger than the sum of its proper divisors (9362754763).

65456604661 is a wasteful number, since it uses less digits than its factorization.

65456604661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1476411.

The product of its (nonzero) digits is 3110400, while the sum is 49.

The spelling of 65456604661 in words is "sixty-five billion, four hundred fifty-six million, six hundred four thousand, six hundred sixty-one".