135657474 has 16 divisors (see below), whose sum is σ = 271509312. Its totient is φ = 45186768.

The previous prime is 135657469. The next prime is 135657481. The reversal of 135657474 is 474756531.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1932 + ... + 16584.

It is an arithmetic number, because the mean of its divisors is an integer number (16969332).

Almost surely, 2^135657474 is an apocalyptic number.

135657474 is an abundant number, since it is smaller than the sum of its proper divisors (135851838).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

135657474 is a wasteful number, since it uses less digits than its factorization.

135657474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16201.

The product of its digits is 352800, while the sum is 42.

The square root of 135657474 is about 11647.2088501924. The cubic root of 135657474 is about 513.8242243917.

The spelling of 135657474 in words is "one hundred thirty-five million, six hundred fifty-seven thousand, four hundred seventy-four".