747293257 has 12 divisors (see below), whose sum is σ = 775886800. Its totient is φ = 719721072.

The previous prime is 747293231. The next prime is 747293291. The reversal of 747293257 is 752392747.

It is not a de Polignac number, because 747293257 - 2¹⁵ = 747260489 is a prime.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (747293227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 438994 + ... + 440692.

Almost surely, 2^747293257 is an apocalyptic number.

It is an amenable number.

747293257 is a deficient number, since it is larger than the sum of its proper divisors (28593543).

747293257 is a wasteful number, since it uses less digits than its factorization.

747293257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2280 (or 2251 counting only the distinct ones).

The product of its digits is 740880, while the sum is 46.

The square root of 747293257 is about 27336.6650672682. The cubic root of 747293257 is about 907.4659836936.

The spelling of 747293257 in words is "seven hundred forty-seven million, two hundred ninety-three thousand, two hundred fifty-seven".