65220371 has 4 divisors (see below), whose sum is σ = 65247000. Its totient is φ = 65193744.

The previous prime is 65220319. The next prime is 65220377. The reversal of 65220371 is 17302256.

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 65220371 - 2²² = 61026067 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 65220371.

It is not an unprimeable number, because it can be changed into a prime (65220377) 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, 9221 + ... + 14678.

It is an arithmetic number, because the mean of its divisors is an integer number (16311750).

Almost surely, 2^65220371 is an apocalyptic number.

65220371 is a deficient number, since it is larger than the sum of its proper divisors (26629).

65220371 is a wasteful number, since it uses less digits than its factorization.

65220371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26628.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 65220371 is about 8075.9130133998. The cubic root of 65220371 is about 402.5264486304.

The spelling of 65220371 in words is "sixty-five million, two hundred twenty thousand, three hundred seventy-one".