761405947 has 4 divisors (see below), whose sum is σ = 769961160. Its totient is φ = 752850736.

The previous prime is 761405923. The next prime is 761405951. The reversal of 761405947 is 749504167.

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

It is a cyclic number.

It is not a de Polignac number, because 761405947 - 2¹¹ = 761403899 is a prime.

It is a super-2 number, since 2×761405947² = 1159478032253933618, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (761405977) 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, 4277473 + ... + 4277650.

It is an arithmetic number, because the mean of its divisors is an integer number (192490290).

Almost surely, 2^761405947 is an apocalyptic number.

761405947 is a deficient number, since it is larger than the sum of its proper divisors (8555213).

761405947 is an equidigital number, since it uses as much as digits as its factorization.

761405947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8555212.

The product of its (nonzero) digits is 211680, while the sum is 43.

The square root of 761405947 is about 27593.5852509238. The cubic root of 761405947 is about 913.1429172039.

The spelling of 761405947 in words is "seven hundred sixty-one million, four hundred five thousand, nine hundred forty-seven".