65949321 has 4 divisors (see below), whose sum is σ = 87932432. Its totient is φ = 43966212.

The previous prime is 65949313. The next prime is 65949329. The reversal of 65949321 is 12394956.

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 an interprime number because it is at equal distance from previous prime (65949313) and next prime (65949329).

It is not a de Polignac number, because 65949321 - 2³ = 65949313 is a prime.

It is a super-2 number, since 2×65949321² = 8698625880722082, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 65949321.

It is not an unprimeable number, because it can be changed into a prime (65949329) 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, 10991551 + ... + 10991556.

It is an arithmetic number, because the mean of its divisors is an integer number (21983108).

Almost surely, 2^65949321 is an apocalyptic number.

It is an amenable number.

65949321 is a deficient number, since it is larger than the sum of its proper divisors (21983111).

65949321 is a wasteful number, since it uses less digits than its factorization.

65949321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21983110.

The product of its digits is 58320, while the sum is 39.

The square root of 65949321 is about 8120.9187288139. The cubic root of 65949321 is about 404.0205382004.

The spelling of 65949321 in words is "sixty-five million, nine hundred forty-nine thousand, three hundred twenty-one".