750616681 has 4 divisors (see below), whose sum is σ = 750978432. Its totient is φ = 750254932.

The previous prime is 750616673. The next prime is 750616697. The reversal of 750616681 is 186616057.

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, and also an emirpimes, since its reverse is a distinct semiprime: 186616057 = 137 ⋅1362161.

It is a cyclic number.

It is not a de Polignac number, because 750616681 - 2³ = 750616673 is a prime.

It is a super-2 number, since 2×750616681² = 1126850803590911522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (750616081) 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, 177745 + ... + 181918.

It is an arithmetic number, because the mean of its divisors is an integer number (187744608).

Almost surely, 2^750616681 is an apocalyptic number.

It is an amenable number.

750616681 is a deficient number, since it is larger than the sum of its proper divisors (361751).

750616681 is a wasteful number, since it uses less digits than its factorization.

750616681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361750.

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 750616681 is about 27397.3845649544. The cubic root of 750616681 is about 908.8092468059.

The spelling of 750616681 in words is "seven hundred fifty million, six hundred sixteen thousand, six hundred eighty-one".