761391 has 12 divisors (see below), whose sum is σ = 1135680. Its totient is φ = 491040.

The previous prime is 761389. The next prime is 761393. The reversal of 761391 is 193167.

761391 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (761389) and next prime (761393).

It is not a de Polignac number, because 761391 - 2¹ = 761389 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

761391 is strictly pandigital in base 7.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 761391.

It is not an unprimeable number, because it can be changed into a prime (761393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1086 + ... + 1643.

It is an arithmetic number, because the mean of its divisors is an integer number (94640).

2⁷⁶¹³⁹¹ is an apocalyptic number.

761391 is a deficient number, since it is larger than the sum of its proper divisors (374289).

761391 is a wasteful number, since it uses less digits than its factorization.

761391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2766 (or 2763 counting only the distinct ones).

The product of its digits is 1134, while the sum is 27.

The square root of 761391 is about 872.5772172135. The cubic root of 761391 is about 91.3136941926.

The spelling of 761391 in words is "seven hundred sixty-one thousand, three hundred ninety-one".