65949731 has 4 divisors (see below), whose sum is σ = 66045864. Its totient is φ = 65853600.

The previous prime is 65949713. The next prime is 65949739. The reversal of 65949731 is 13794956.

65949731 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 65949731 - 2¹⁴ = 65933347 is a prime.

It is a super-2 number, since 2×65949731² = 8698734037944722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65949739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47030 + ... + 48411.

It is an arithmetic number, because the mean of its divisors is an integer number (16511466).

Almost surely, 2^65949731 is an apocalyptic number.

65949731 is a deficient number, since it is larger than the sum of its proper divisors (96133).

65949731 is an equidigital number, since it uses as much as digits as its factorization.

65949731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96132.

The product of its digits is 204120, while the sum is 44.

The square root of 65949731 is about 8120.9439722239. The cubic root of 65949731 is about 404.0213754497.

The spelling of 65949731 in words is "sixty-five million, nine hundred forty-nine thousand, seven hundred thirty-one".