136879963 has 4 divisors (see below), whose sum is σ = 149323608. Its totient is φ = 124436320.

The previous prime is 136879957. The next prime is 136879991. The reversal of 136879963 is 369978631.

136879963 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136879963 is a prime.

It is a super-2 number, since 2×136879963² = 37472248541762738, which contains 22 as substring.

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 136879963.

It is not an unprimeable number, because it can be changed into a prime (136879163) 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, 6221806 + ... + 6221827.

It is an arithmetic number, because the mean of its divisors is an integer number (37330902).

Almost surely, 2^136879963 is an apocalyptic number.

136879963 is a deficient number, since it is larger than the sum of its proper divisors (12443645).

136879963 is a wasteful number, since it uses less digits than its factorization.

136879963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12443644.

The product of its digits is 1469664, while the sum is 52.

The square root of 136879963 is about 11699.5710605133. The cubic root of 136879963 is about 515.3630682031.

The spelling of 136879963 in words is "one hundred thirty-six million, eight hundred seventy-nine thousand, nine hundred sixty-three".