65379661 has 4 divisors (see below), whose sum is σ = 65395872. Its totient is φ = 65363452.

The previous prime is 65379647. The next prime is 65379697. The reversal of 65379661 is 16697356.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 65379661 - 2¹⁵ = 65346893 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 (65379631) 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, 3216 + ... + 11878.

It is an arithmetic number, because the mean of its divisors is an integer number (16348968).

Almost surely, 2^65379661 is an apocalyptic number.

It is an amenable number.

65379661 is a deficient number, since it is larger than the sum of its proper divisors (16211).

65379661 is an equidigital number, since it uses as much as digits as its factorization.

65379661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16210.

The product of its digits is 204120, while the sum is 43.

The square root of 65379661 is about 8085.7690419650. The cubic root of 65379661 is about 402.8538836949.

The spelling of 65379661 in words is "sixty-five million, three hundred seventy-nine thousand, six hundred sixty-one".