61049860 has 24 divisors (see below), whose sum is σ = 129530520. Its totient is φ = 24167424.

The previous prime is 61049783. The next prime is 61049887. The reversal of 61049860 is 6894016.

It can be written as a sum of positive squares in 4 ways, for example, as 4769856 + 56280004 = 2184^2 + 7502^2 .

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, 13795 + ... + 17674.

It is an arithmetic number, because the mean of its divisors is an integer number (5397105).

Almost surely, 2^61049860 is an apocalyptic number.

It is an amenable number.

61049860 is an abundant number, since it is smaller than the sum of its proper divisors (68480660).

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

61049860 is a wasteful number, since it uses less digits than its factorization.

61049860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31575 (or 31573 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 61049860 is about 7813.4409833312. The cubic root of 61049860 is about 393.7569425164.

The spelling of 61049860 in words is "sixty-one million, forty-nine thousand, eight hundred sixty".