756290749 has 8 divisors (see below), whose sum is σ = 769427192. Its totient is φ = 743178240.

The previous prime is 756290741. The next prime is 756290753. The reversal of 756290749 is 947092657.

It can be written as a sum of positive squares in 4 ways, for example, as 188183524 + 568107225 = 13718^2 + 23835^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 756290749 - 2³ = 756290741 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 (756290741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64957 + ... + 75709.

It is an arithmetic number, because the mean of its divisors is an integer number (96178399).

Almost surely, 2^756290749 is an apocalyptic number.

It is an amenable number.

756290749 is a deficient number, since it is larger than the sum of its proper divisors (13136443).

756290749 is a wasteful number, since it uses less digits than its factorization.

756290749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11967.

The product of its (nonzero) digits is 952560, while the sum is 49.

The square root of 756290749 is about 27500.7408809290. The cubic root of 756290749 is about 911.0934603522.

The spelling of 756290749 in words is "seven hundred fifty-six million, two hundred ninety thousand, seven hundred forty-nine".