747685513 has 4 divisors (see below), whose sum is σ = 753393168. Its totient is φ = 741977860.

The previous prime is 747685457. The next prime is 747685567. The reversal of 747685513 is 315586747.

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 a de Polignac number, because none of the positive numbers 2^k-747685513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (747685573) 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, 2853631 + ... + 2853892.

It is an arithmetic number, because the mean of its divisors is an integer number (188348292).

Almost surely, 2^747685513 is an apocalyptic number.

It is an amenable number.

747685513 is a deficient number, since it is larger than the sum of its proper divisors (5707655).

747685513 is a wasteful number, since it uses less digits than its factorization.

747685513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5707654.

The product of its digits is 705600, while the sum is 46.

The square root of 747685513 is about 27343.8386661420. The cubic root of 747685513 is about 907.6247329354.

The spelling of 747685513 in words is "seven hundred forty-seven million, six hundred eighty-five thousand, five hundred thirteen".