761563887 has 32 divisors (see below), whose sum is σ = 1200291840. Its totient is φ = 420305760.

The previous prime is 761563861. The next prime is 761563897. The reversal of 761563887 is 788365167.

It is not a de Polignac number, because 761563887 - 2¹⁰ = 761562863 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (761563897) 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 31 ways as a sum of consecutive naturals, for example, 480298 + ... + 481880.

It is an arithmetic number, because the mean of its divisors is an integer number (37509120).

Almost surely, 2^761563887 is an apocalyptic number.

761563887 is a deficient number, since it is larger than the sum of its proper divisors (438727953).

761563887 is a wasteful number, since it uses less digits than its factorization.

761563887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2363.

The product of its digits is 1693440, while the sum is 51.

The square root of 761563887 is about 27596.4469995686. The cubic root of 761563887 is about 913.2060512092.

The spelling of 761563887 in words is "seven hundred sixty-one million, five hundred sixty-three thousand, eight hundred eighty-seven".