868401697 has 4 divisors (see below), whose sum is σ = 873933076. Its totient is φ = 862870320.

The previous prime is 868401691. The next prime is 868401713. The reversal of 868401697 is 796104868.

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

It can be written as a sum of positive squares in 2 ways, for example, as 491109921 + 377291776 = 22161^2 + 19424^2 .

It is a cyclic number.

It is not a de Polignac number, because 868401697 - 2²⁷ = 734183969 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 868401697.

It is not an unprimeable number, because it can be changed into a prime (868401691) 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, 2765454 + ... + 2765767.

It is an arithmetic number, because the mean of its divisors is an integer number (218483269).

Almost surely, 2^868401697 is an apocalyptic number.

It is an amenable number.

868401697 is a deficient number, since it is larger than the sum of its proper divisors (5531379).

868401697 is a wasteful number, since it uses less digits than its factorization.

868401697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5531378.

The product of its (nonzero) digits is 580608, while the sum is 49.

The square root of 868401697 is about 29468.6561790659. The cubic root of 868401697 is about 954.0553131848.

The spelling of 868401697 in words is "eight hundred sixty-eight million, four hundred one thousand, six hundred ninety-seven".