61009136 has 20 divisors (see below), whose sum is σ = 118346592. Its totient is φ = 30468096.

The previous prime is 61009129. The next prime is 61009159. The reversal of 61009136 is 63190016.

It is a super-2 number, since 2×61009136² = 7444229350932992, which contains 22 as substring.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15920 + ... + 19376.

Almost surely, 2^61009136 is an apocalyptic number.

It is an amenable number.

61009136 is a deficient number, since it is larger than the sum of its proper divisors (57337456).

61009136 is a wasteful number, since it uses less digits than its factorization.

61009136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4568 (or 4562 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 61009136 is about 7810.8345264767. The cubic root of 61009136 is about 393.6693696998.

The spelling of 61009136 in words is "sixty-one million, nine thousand, one hundred thirty-six".