61140724 has 12 divisors (see below), whose sum is σ = 109888324. Its totient is φ = 29744064.

The previous prime is 61140719. The next prime is 61140733. The reversal of 61140724 is 42704116.

It can be written as a sum of positive squares in 2 ways, for example, as 54022500 + 7118224 = 7350^2 + 2668^2 .

It is a hoax number, since the sum of its digits (25) 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, 206409 + ... + 206704.

Almost surely, 2^61140724 is an apocalyptic number.

It is an amenable number.

61140724 is a deficient number, since it is larger than the sum of its proper divisors (48747600).

61140724 is a wasteful number, since it uses less digits than its factorization.

61140724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413154 (or 413152 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 61140724 is about 7819.2534170469. The cubic root of 61140724 is about 393.9521960090.

The spelling of 61140724 in words is "sixty-one million, one hundred forty thousand, seven hundred twenty-four".