75899664 has 30 divisors (see below), whose sum is σ = 212414046. Its totient is φ = 25299840.

The previous prime is 75899647. The next prime is 75899671. The reversal of 75899664 is 46699857.

It can be written as a sum of positive squares in only one way, i.e., 50979600 + 24920064 = 7140^2 + 4992^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 75899664.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 263397 + ... + 263684.

Almost surely, 2^75899664 is an apocalyptic number.

It is an amenable number.

75899664 is an abundant number, since it is smaller than the sum of its proper divisors (136514382).

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

75899664 is a wasteful number, since it uses less digits than its factorization.

75899664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 527095 (or 527086 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 54.

The square root of 75899664 is about 8712.0413222161. The cubic root of 75899664 is about 423.3958703708.

The spelling of 75899664 in words is "seventy-five million, eight hundred ninety-nine thousand, six hundred sixty-four".