745666815 has 8 divisors (see below), whose sum is σ = 1193066928. Its totient is φ = 397688960.

The previous prime is 745666813. The next prime is 745666819. The reversal of 745666815 is 518666547.

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

It is not a de Polignac number, because 745666815 - 2¹ = 745666813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745666813) 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, 24855546 + ... + 24855575.

It is an arithmetic number, because the mean of its divisors is an integer number (149133366).

Almost surely, 2^745666815 is an apocalyptic number.

745666815 is a deficient number, since it is larger than the sum of its proper divisors (447400113).

745666815 is a wasteful number, since it uses less digits than its factorization.

745666815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49711129.

The product of its digits is 1209600, while the sum is 48.

The square root of 745666815 is about 27306.9005015216. The cubic root of 745666815 is about 906.8071558329.

The spelling of 745666815 in words is "seven hundred forty-five million, six hundred sixty-six thousand, eight hundred fifteen".