65320077 has 4 divisors (see below), whose sum is σ = 87093440. Its totient is φ = 43546716.

The previous prime is 65320067. The next prime is 65320097. The reversal of 65320077 is 77002356.

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 65320077 - 2⁴ = 65320061 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 (65320027) 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, 10886677 + ... + 10886682.

It is an arithmetic number, because the mean of its divisors is an integer number (21773360).

Almost surely, 2^65320077 is an apocalyptic number.

It is an amenable number.

65320077 is a deficient number, since it is larger than the sum of its proper divisors (21773363).

65320077 is a wasteful number, since it uses less digits than its factorization.

65320077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21773362.

The product of its (nonzero) digits is 8820, while the sum is 30.

The square root of 65320077 is about 8082.0837040951. The cubic root of 65320077 is about 402.7314656978.

The spelling of 65320077 in words is "sixty-five million, three hundred twenty thousand, seventy-seven".