761897856 has 32 divisors (see below), whose sum is σ = 2023792200. Its totient is φ = 253965824.

The previous prime is 761897813. The next prime is 761897897. The reversal of 761897856 is 658798167.

It is a tau number, because it is divible by the number of its divisors (32).

It is a junction number, because it is equal to n+sod(n) for n = 761897796 and 761897805.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 991671 + ... + 992438.

Almost surely, 2^761897856 is an apocalyptic number.

It is an amenable number.

761897856 is an abundant number, since it is smaller than the sum of its proper divisors (1261894344).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

761897856 is a wasteful number, since it uses less digits than its factorization.

761897856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1984126 (or 1984114 counting only the distinct ones).

The product of its digits is 5080320, while the sum is 57.

The square root of 761897856 is about 27602.4972783261. The cubic root of 761897856 is about 913.3395212728.

The spelling of 761897856 in words is "seven hundred sixty-one million, eight hundred ninety-seven thousand, eight hundred fifty-six".