747878797 has 4 divisors (see below), whose sum is σ = 753259360. Its totient is φ = 742498236.

The previous prime is 747878759. The next prime is 747878809. The reversal of 747878797 is 797878747.

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-747878797 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 (747878737) 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, 2690073 + ... + 2690350.

It is an arithmetic number, because the mean of its divisors is an integer number (188314840).

Almost surely, 2^747878797 is an apocalyptic number.

It is an amenable number.

747878797 is a deficient number, since it is larger than the sum of its proper divisors (5380563).

747878797 is a wasteful number, since it uses less digits than its factorization.

747878797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5380562.

The product of its digits is 38723328, while the sum is 64.

The square root of 747878797 is about 27347.3727622966. The cubic root of 747878797 is about 907.7029361466.

The spelling of 747878797 in words is "seven hundred forty-seven million, eight hundred seventy-eight thousand, seven hundred ninety-seven".