747734457 has 4 divisors (see below), whose sum is σ = 996979280. Its totient is φ = 498489636.

The previous prime is 747734453. The next prime is 747734459. The reversal of 747734457 is 754437747.

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 not a de Polignac number, because 747734457 - 2² = 747734453 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (747734453) 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, 124622407 + ... + 124622412.

It is an arithmetic number, because the mean of its divisors is an integer number (249244820).

Almost surely, 2^747734457 is an apocalyptic number.

It is an amenable number.

747734457 is a deficient number, since it is larger than the sum of its proper divisors (249244823).

747734457 is a wasteful number, since it uses less digits than its factorization.

747734457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249244822.

The product of its digits is 2304960, while the sum is 48.

The square root of 747734457 is about 27344.7336245940. The cubic root of 747734457 is about 907.6445370798.

The spelling of 747734457 in words is "seven hundred forty-seven million, seven hundred thirty-four thousand, four hundred fifty-seven".