65772349 has 4 divisors (see below), whose sum is σ = 66274560. Its totient is φ = 65270140.

The previous prime is 65772331. The next prime is 65772361. The reversal of 65772349 is 94327756.

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 a cyclic number.

It is not a de Polignac number, because 65772349 - 2⁷ = 65772221 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 (65772389) 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, 250909 + ... + 251170.

It is an arithmetic number, because the mean of its divisors is an integer number (16568640).

Almost surely, 2^65772349 is an apocalyptic number.

It is an amenable number.

65772349 is a deficient number, since it is larger than the sum of its proper divisors (502211).

65772349 is a wasteful number, since it uses less digits than its factorization.

65772349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502210.

The product of its digits is 317520, while the sum is 43.

The square root of 65772349 is about 8110.0153514035. The cubic root of 65772349 is about 403.6588242203.

The spelling of 65772349 in words is "sixty-five million, seven hundred seventy-two thousand, three hundred forty-nine".