65150661 has 4 divisors (see below), whose sum is σ = 86867552. Its totient is φ = 43433772.

The previous prime is 65150653. The next prime is 65150663. The reversal of 65150661 is 16605156.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 65150661 - 2³ = 65150653 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 (65150663) 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, 10858441 + ... + 10858446.

It is an arithmetic number, because the mean of its divisors is an integer number (21716888).

Almost surely, 2^65150661 is an apocalyptic number.

It is an amenable number.

65150661 is a deficient number, since it is larger than the sum of its proper divisors (21716891).

65150661 is a wasteful number, since it uses less digits than its factorization.

65150661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21716890.

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 65150661 is about 8071.5959388463. The cubic root of 65150661 is about 402.3829856731.

The spelling of 65150661 in words is "sixty-five million, one hundred fifty thousand, six hundred sixty-one".