65674350664 has 16 divisors (see below), whose sum is σ = 132611669820. Its totient is φ = 30311238720.

The previous prime is 65674350661. The next prime is 65674350667. The reversal of 65674350664 is 46605347656.

It is an interprime number because it is at equal distance from previous prime (65674350661) and next prime (65674350667).

It can be written as a sum of positive squares in 2 ways, for example, as 64795702500 + 878648164 = 254550^2 + 29642^2 .

It is a Harshad number since it is a multiple of its sum of digits (52).

It is not an unprimeable number, because it can be changed into a prime (65674350661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 315741967 + ... + 315742174.

Almost surely, 2^65674350664 is an apocalyptic number.

It is an amenable number.

65674350664 is an abundant number, since it is smaller than the sum of its proper divisors (66937319156).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65674350664 is a wasteful number, since it uses less digits than its factorization.

65674350664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 631484160 (or 631484156 counting only the distinct ones).

The product of its (nonzero) digits is 10886400, while the sum is 52.

The spelling of 65674350664 in words is "sixty-five billion, six hundred seventy-four million, three hundred fifty thousand, six hundred sixty-four".