9645629679 has 12 divisors (see below), whose sum is σ = 15922944336. Its totient is φ = 5511788352.

The previous prime is 9645629671. The next prime is 9645629687. The reversal of 9645629679 is 9769265469.

9645629679 is a `hidden beast` number, since 9 + 6 + 4 + 562 + 9 + 67 + 9 = 666.

It is an interprime number because it is at equal distance from previous prime (9645629671) and next prime (9645629687).

It is not a de Polignac number, because 9645629679 - 2³ = 9645629671 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63), and also a Moran number because the ratio is a prime number: 153105233 = 9645629679 / (9 + 6 + 4 + 5 + 6 + 2 + 9 + 6 + 7 + 9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9645629671) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 76552554 + ... + 76552679.

It is an arithmetic number, because the mean of its divisors is an integer number (1326912028).

Almost surely, 2^9645629679 is an apocalyptic number.

9645629679 is a deficient number, since it is larger than the sum of its proper divisors (6277314657).

9645629679 is a wasteful number, since it uses less digits than its factorization.

9645629679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153105246 (or 153105243 counting only the distinct ones).

The product of its digits is 44089920, while the sum is 63.

The square root of 9645629679 is about 98212.1666546462. The cubic root of 9645629679 is about 2128.6790930712.

The spelling of 9645629679 in words is "nine billion, six hundred forty-five million, six hundred twenty-nine thousand, six hundred seventy-nine".