966772613 has 4 divisors (see below), whose sum is σ = 972361068. Its totient is φ = 961184160.

The previous prime is 966772607. The next prime is 966772621. The reversal of 966772613 is 316277669.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 316277669 = 23 ⋅13751203.

It can be written as a sum of positive squares in 2 ways, for example, as 452072644 + 514699969 = 21262^2 + 22687^2 .

It is a cyclic number.

It is not a de Polignac number, because 966772613 - 2⁶ = 966772549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (966772663) 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, 2793968 + ... + 2794313.

It is an arithmetic number, because the mean of its divisors is an integer number (243090267).

Almost surely, 2^966772613 is an apocalyptic number.

It is an amenable number.

966772613 is a deficient number, since it is larger than the sum of its proper divisors (5588455).

966772613 is a wasteful number, since it uses less digits than its factorization.

966772613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5588454.

The product of its digits is 571536, while the sum is 47.

The square root of 966772613 is about 31092.9672594945. The cubic root of 966772613 is about 988.7992151601.

The spelling of 966772613 in words is "nine hundred sixty-six million, seven hundred seventy-two thousand, six hundred thirteen".