65507967 has 32 divisors (see below), whose sum is σ = 111372800. Its totient is φ = 37278144.

The previous prime is 65507957. The next prime is 65507983. The reversal of 65507967 is 76970556.

It is a happy number.

65507967 is a `hidden beast` number, since 6 + 550 + 7 + 96 + 7 = 666.

It is not a de Polignac number, because 65507967 - 2⁶ = 65507903 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65507927) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 57459 + ... + 58587.

It is an arithmetic number, because the mean of its divisors is an integer number (3480400).

Almost surely, 2^65507967 is an apocalyptic number.

65507967 is a deficient number, since it is larger than the sum of its proper divisors (45864833).

65507967 is a wasteful number, since it uses less digits than its factorization.

65507967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1452 (or 1446 counting only the distinct ones).

The product of its (nonzero) digits is 396900, while the sum is 45.

The square root of 65507967 is about 8093.6992160569. The cubic root of 65507967 is about 403.1172418193.

The spelling of 65507967 in words is "sixty-five million, five hundred seven thousand, nine hundred sixty-seven".