745677653 has 4 divisors (see below), whose sum is σ = 852203040. Its totient is φ = 639152268.

The previous prime is 745677649. The next prime is 745677671. The reversal of 745677653 is 356776547.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 745677653 - 2² = 745677649 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745677683) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53262683 + ... + 53262696.

It is an arithmetic number, because the mean of its divisors is an integer number (213050760).

Almost surely, 2^745677653 is an apocalyptic number.

It is an amenable number.

745677653 is a deficient number, since it is larger than the sum of its proper divisors (106525387).

745677653 is a wasteful number, since it uses less digits than its factorization.

745677653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106525386.

The product of its digits is 3704400, while the sum is 50.

The square root of 745677653 is about 27307.0989488082. The cubic root of 745677653 is about 906.8115491840.

The spelling of 745677653 in words is "seven hundred forty-five million, six hundred seventy-seven thousand, six hundred fifty-three".