761089681 has 4 divisors (see below), whose sum is σ = 830279664. Its totient is φ = 691899700.

The previous prime is 761089673. The next prime is 761089697. The reversal of 761089681 is 186980167.

761089681 = T₁₁₇₅₈ + T₁₁₇₅₉ + ... + T₁₁₇₆₈.

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: 186980167 = 11 ⋅16998197.

It is a cyclic number.

It is not a de Polignac number, because 761089681 - 2³ = 761089673 is a prime.

It is a super-2 number, since 2×761089681² = 1158515005049363522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (761089661) 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, 34594975 + ... + 34594996.

It is an arithmetic number, because the mean of its divisors is an integer number (207569916).

Almost surely, 2^761089681 is an apocalyptic number.

It is an amenable number.

761089681 is a deficient number, since it is larger than the sum of its proper divisors (69189983).

761089681 is a wasteful number, since it uses less digits than its factorization.

761089681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69189982.

The product of its (nonzero) digits is 145152, while the sum is 46.

The square root of 761089681 is about 27587.8538672366. The cubic root of 761089681 is about 913.0164686455.

The spelling of 761089681 in words is "seven hundred sixty-one million, eighty-nine thousand, six hundred eighty-one".