761979 has 4 divisors (see below), whose sum is σ = 1015976. Its totient is φ = 507984.

The previous prime is 761977. The next prime is 761983. The reversal of 761979 is 979167.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 761979 - 2¹ = 761977 is a prime.

It is a super-2 number, since 2×761979² = 1161223992882, which contains 22 as substring.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (761977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126994 + ... + 126999.

It is an arithmetic number, because the mean of its divisors is an integer number (253994).

2⁷⁶¹⁹⁷⁹ is an apocalyptic number.

761979 is a deficient number, since it is larger than the sum of its proper divisors (253997).

761979 is a wasteful number, since it uses less digits than its factorization.

761979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253996.

The product of its digits is 23814, while the sum is 39.

The square root of 761979 is about 872.9140851195. The cubic root of 761979 is about 91.3371944425.

The spelling of 761979 in words is "seven hundred sixty-one thousand, nine hundred seventy-nine".