761921 has 8 divisors (see below), whose sum is σ = 803904. Its totient is φ = 720720.

The previous prime is 761897. The next prime is 761927. The reversal of 761921 is 129167.

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 761921 - 2¹⁰ = 760897 is a prime.

It is a super-2 number, since 2×761921² = 1161047220482, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (761927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3506 + ... + 3716.

It is an arithmetic number, because the mean of its divisors is an integer number (100488).

2⁷⁶¹⁹²¹ is an apocalyptic number.

It is an amenable number.

761921 is a deficient number, since it is larger than the sum of its proper divisors (41983).

761921 is a wasteful number, since it uses less digits than its factorization.

761921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391.

The product of its digits is 756, while the sum is 26.

The square root of 761921 is about 872.8808624320. The cubic root of 761921 is about 91.3348769282.

The spelling of 761921 in words is "seven hundred sixty-one thousand, nine hundred twenty-one".