761891 has 8 divisors (see below), whose sum is σ = 829920. Its totient is φ = 695232.

The previous prime is 761879. The next prime is 761897. The reversal of 761891 is 198167.

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 761891 - 2¹⁸ = 499747 is a prime.

It is not an unprimeable number, because it can be changed into a prime (761897) 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, 1055 + ... + 1623.

It is an arithmetic number, because the mean of its divisors is an integer number (103740).

2⁷⁶¹⁸⁹¹ is an apocalyptic number.

761891 is a deficient number, since it is larger than the sum of its proper divisors (68029).

761891 is a wasteful number, since it uses less digits than its factorization.

761891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 685.

The product of its digits is 3024, while the sum is 32.

The square root of 761891 is about 872.8636777871. The cubic root of 761891 is about 91.3336781678. Note that the first 3 decimals are identical.

The spelling of 761891 in words is "seven hundred sixty-one thousand, eight hundred ninety-one".