136870947 has 6 divisors (see below), whose sum is σ = 197702492. Its totient is φ = 91247292.

The previous prime is 136870939. The next prime is 136870991. The reversal of 136870947 is 749078631.

It is not a de Polignac number, because 136870947 - 2³ = 136870939 is a prime.

It is a super-2 number, since 2×136870947² = 37467312265353618, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136850947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7603933 + ... + 7603950.

Almost surely, 2^136870947 is an apocalyptic number.

136870947 is a deficient number, since it is larger than the sum of its proper divisors (60831545).

136870947 is a wasteful number, since it uses less digits than its factorization.

136870947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15207889 (or 15207886 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The square root of 136870947 is about 11699.1857408967. The cubic root of 136870947 is about 515.3517526550.

The spelling of 136870947 in words is "one hundred thirty-six million, eight hundred seventy thousand, nine hundred forty-seven".