947890065 has 16 divisors (see below), whose sum is σ = 1551895488. Its totient is φ = 493784256.

The previous prime is 947890061. The next prime is 947890081. The reversal of 947890065 is 560098749.

It is not a de Polignac number, because 947890065 - 2² = 947890061 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 947889996 and 947890023.

It is not an unprimeable number, because it can be changed into a prime (947890061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 734154 + ... + 735443.

It is an arithmetic number, because the mean of its divisors is an integer number (96993468).

Almost surely, 2^947890065 is an apocalyptic number.

It is an amenable number.

947890065 is a deficient number, since it is larger than the sum of its proper divisors (604005423).

947890065 is a wasteful number, since it uses less digits than its factorization.

947890065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1469648.

The product of its (nonzero) digits is 544320, while the sum is 48.

The square root of 947890065 is about 30787.8233235154. The cubic root of 947890065 is about 982.3192553193.

The spelling of 947890065 in words is "nine hundred forty-seven million, eight hundred ninety thousand, sixty-five".