136986471 has 20 divisors (see below), whose sum is σ = 207446272. Its totient is φ = 90069408.

The previous prime is 136986467. The next prime is 136986491. The reversal of 136986471 is 174689631.

It is a happy number.

It is not a de Polignac number, because 136986471 - 2² = 136986467 is a prime.

It is a super-3 number, since 3×136986471³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136986431) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5671 + ... + 17496.

Almost surely, 2^136986471 is an apocalyptic number.

136986471 is a deficient number, since it is larger than the sum of its proper divisors (70459801).

136986471 is an equidigital number, since it uses as much as digits as its factorization.

136986471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23252 (or 23243 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 136986471 is about 11704.1219662134. The cubic root of 136986471 is about 515.4967036836.

The spelling of 136986471 in words is "one hundred thirty-six million, nine hundred eighty-six thousand, four hundred seventy-one".