747646747 has 4 divisors (see below), whose sum is σ = 771764416. Its totient is φ = 723529080.

The previous prime is 747646727. The next prime is 747646777.

747646747 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 747646747 - 2²³ = 739258139 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 747646694 and 747646703.

It is not an unprimeable number, because it can be changed into a prime (747646727) 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, 12058788 + ... + 12058849.

It is an arithmetic number, because the mean of its divisors is an integer number (192941104).

Almost surely, 2^747646747 is an apocalyptic number.

747646747 is a deficient number, since it is larger than the sum of its proper divisors (24117669).

747646747 is a wasteful number, since it uses less digits than its factorization.

747646747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24117668.

The product of its digits is 5531904, while the sum is 52.

The square root of 747646747 is about 27343.1297952520. The cubic root of 747646747 is about 907.6090464880.

The spelling of 747646747 in words is "seven hundred forty-seven million, six hundred forty-six thousand, seven hundred forty-seven".