865941497 has 4 divisors (see below), whose sum is σ = 874348800. Its totient is φ = 857534196.

The previous prime is 865941491. The next prime is 865941521. The reversal of 865941497 is 794149568.

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 865941497 - 2¹⁴ = 865925113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (865941491) 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, 4203497 + ... + 4203702.

It is an arithmetic number, because the mean of its divisors is an integer number (218587200).

Almost surely, 2^865941497 is an apocalyptic number.

It is an amenable number.

865941497 is a deficient number, since it is larger than the sum of its proper divisors (8407303).

865941497 is a wasteful number, since it uses less digits than its factorization.

865941497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8407302.

The product of its digits is 2177280, while the sum is 53.

The square root of 865941497 is about 29426.8839159025. The cubic root of 865941497 is about 953.1535082140.

The spelling of 865941497 in words is "eight hundred sixty-five million, nine hundred forty-one thousand, four hundred ninety-seven".