968634749 has 4 divisors (see below), whose sum is σ = 968771580. Its totient is φ = 968497920.

The previous prime is 968634739. The next prime is 968634761. The reversal of 968634749 is 947436869.

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 437562724 + 531072025 = 20918^2 + 23045^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-968634749 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 968634694 and 968634703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (968634739) 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, 57182 + ... + 72159.

It is an arithmetic number, because the mean of its divisors is an integer number (242192895).

Almost surely, 2^968634749 is an apocalyptic number.

It is an amenable number.

968634749 is a deficient number, since it is larger than the sum of its proper divisors (136831).

968634749 is a wasteful number, since it uses less digits than its factorization.

968634749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136830.

The product of its digits is 7838208, while the sum is 56.

The square root of 968634749 is about 31122.8975032853. The cubic root of 968634749 is about 989.4336620712.

The spelling of 968634749 in words is "nine hundred sixty-eight million, six hundred thirty-four thousand, seven hundred forty-nine".