65322091 has 4 divisors (see below), whose sum is σ = 65364592. Its totient is φ = 65279592.

The previous prime is 65322073. The next prime is 65322107. The reversal of 65322091 is 19022356.

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

It is a cyclic number.

It is not a de Polignac number, because 65322091 - 2⁹ = 65321579 is a prime.

It is a super-2 number, since 2×65322091² = 8533951145224562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65322071) 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, 18855 + ... + 22048.

It is an arithmetic number, because the mean of its divisors is an integer number (16341148).

Almost surely, 2^65322091 is an apocalyptic number.

65322091 is a deficient number, since it is larger than the sum of its proper divisors (42501).

65322091 is a wasteful number, since it uses less digits than its factorization.

65322091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42500.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 65322091 is about 8082.2082997161. The cubic root of 65322091 is about 402.7356047664.

The spelling of 65322091 in words is "sixty-five million, three hundred twenty-two thousand, ninety-one".