787534961 has 4 divisors (see below), whose sum is σ = 804291072. Its totient is φ = 770778852.

The previous prime is 787534939. The next prime is 787534987. The reversal of 787534961 is 169435787.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 787534961 - 2¹⁸ = 787272817 is a prime.

It is a super-2 number, since 2×787534961² = 1240422629594543042, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (787534921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8377985 + ... + 8378078.

It is an arithmetic number, because the mean of its divisors is an integer number (201072768).

Almost surely, 2^787534961 is an apocalyptic number.

It is an amenable number.

787534961 is a deficient number, since it is larger than the sum of its proper divisors (16756111).

787534961 is a wasteful number, since it uses less digits than its factorization.

787534961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16756110.

The product of its digits is 1270080, while the sum is 50.

The square root of 787534961 is about 28063.0533085764. The cubic root of 787534961 is about 923.4710406273.

The spelling of 787534961 in words is "seven hundred eighty-seven million, five hundred thirty-four thousand, nine hundred sixty-one".