61189012 has 12 divisors (see below), whose sum is σ = 107263156. Its totient is φ = 30542400.

The previous prime is 61188997. The next prime is 61189021. The reversal of 61189012 is 21098116.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 41422096 + 19766916 = 6436^2 + 4446^2 .

It is a super-2 number, since 2×61189012² = 7488190379072288, which contains 22 as substring.

It is a hoax number, since the sum of its digits (28) 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, 10323 + ... + 15130.

Almost surely, 2^61189012 is an apocalyptic number.

It is an amenable number.

61189012 is a deficient number, since it is larger than the sum of its proper divisors (46074144).

61189012 is a wasteful number, since it uses less digits than its factorization.

61189012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26058 (or 26056 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 28.

The square root of 61189012 is about 7822.3405704431. The cubic root of 61189012 is about 394.0558811719.

The spelling of 61189012 in words is "sixty-one million, one hundred eighty-nine thousand, twelve".