66607500757 has 8 divisors (see below), whose sum is σ = 76208685696. Its totient is φ = 57027772752.

The previous prime is 66607500731. The next prime is 66607500761. The reversal of 66607500757 is 75700570666.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66607500757 - 2³⁵ = 32247762389 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 66607500757.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66607500857) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5357578 + ... + 5369995.

It is an arithmetic number, because the mean of its divisors is an integer number (9526085712).

Almost surely, 2^66607500757 is an apocalyptic number.

It is an amenable number.

66607500757 is a deficient number, since it is larger than the sum of its proper divisors (9601184939).

66607500757 is a wasteful number, since it uses less digits than its factorization.

66607500757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10728467.

The product of its (nonzero) digits is 1852200, while the sum is 49.

The spelling of 66607500757 in words is "sixty-six billion, six hundred seven million, five hundred thousand, seven hundred fifty-seven".