761605977 has 16 divisors (see below), whose sum is σ = 1113050880. Its totient is φ = 459387600.

The previous prime is 761605973. The next prime is 761605987. The reversal of 761605977 is 779506167.

It is a happy number.

It is not a de Polignac number, because 761605977 - 2² = 761605973 is a prime.

It is not an unprimeable number, because it can be changed into a prime (761605973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47727 + ... + 61652.

It is an arithmetic number, because the mean of its divisors is an integer number (69565680).

Almost surely, 2^761605977 is an apocalyptic number.

It is an amenable number.

761605977 is a deficient number, since it is larger than the sum of its proper divisors (351444903).

761605977 is a wasteful number, since it uses less digits than its factorization.

761605977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109604.

The product of its (nonzero) digits is 555660, while the sum is 48.

The square root of 761605977 is about 27597.2095872028. The cubic root of 761605977 is about 913.2228745448. Note that the first 3 decimals are identical.

The spelling of 761605977 in words is "seven hundred sixty-one million, six hundred five thousand, nine hundred seventy-seven".