61159740 has 24 divisors (see below), whose sum is σ = 171247440. Its totient is φ = 16309248.

The previous prime is 61159729. The next prime is 61159789. The reversal of 61159740 is 4795116.

It is a congruent 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, 509605 + ... + 509724.

It is an arithmetic number, because the mean of its divisors is an integer number (7135310).

Almost surely, 2^61159740 is an apocalyptic number.

61159740 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61159740 is an abundant number, since it is smaller than the sum of its proper divisors (110087700).

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

61159740 is a wasteful number, since it uses less digits than its factorization.

61159740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1019341 (or 1019339 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 33.

The square root of 61159740 is about 7820.4692953812. The cubic root of 61159740 is about 393.9930341387.

The spelling of 61159740 in words is "sixty-one million, one hundred fifty-nine thousand, seven hundred forty".