61949960 has 32 divisors (see below), whose sum is σ = 139838400. Its totient is φ = 24699840.

The previous prime is 61949957. The next prime is 61949969. The reversal of 61949960 is 6994916.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (61949969) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10901 + ... + 15579.

It is an arithmetic number, because the mean of its divisors is an integer number (4369950).

Almost surely, 2^61949960 is an apocalyptic number.

It is an amenable number.

61949960 is an abundant number, since it is smaller than the sum of its proper divisors (77888440).

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

61949960 is a wasteful number, since it uses less digits than its factorization.

61949960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5021 (or 5017 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 44.

The square root of 61949960 is about 7870.8296894292. The cubic root of 61949960 is about 395.6826522569.

The spelling of 61949960 in words is "sixty-one million, nine hundred forty-nine thousand, nine hundred sixty".