756536989 has 16 divisors (see below), whose sum is σ = 842404864. Its totient is φ = 674697600.

The previous prime is 756536987. The next prime is 756536993. The reversal of 756536989 is 989635657.

It is a cyclic number.

It is not a de Polignac number, because 756536989 - 2¹ = 756536987 is a prime.

It is a super-2 number, since 2×756536989² = 1144696431450372242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (756536983) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 330529 + ... + 332809.

It is an arithmetic number, because the mean of its divisors is an integer number (52650304).

Almost surely, 2^756536989 is an apocalyptic number.

It is an amenable number.

756536989 is a deficient number, since it is larger than the sum of its proper divisors (85867875).

756536989 is a wasteful number, since it uses less digits than its factorization.

756536989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3148.

The product of its digits is 12247200, while the sum is 58.

The square root of 756536989 is about 27505.2174868697. The cubic root of 756536989 is about 911.1923303128.

The spelling of 756536989 in words is "seven hundred fifty-six million, five hundred thirty-six thousand, nine hundred eighty-nine".