61969960 has 32 divisors (see below), whose sum is σ = 150159240. Its totient is φ = 22881024.

The previous prime is 61969949. The next prime is 61969969. The reversal of 61969960 is 6996916.

It can be written as a sum of positive squares in 4 ways, for example, as 52446564 + 9523396 = 7242^2 + 3086^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 61969960.

It is not an unprimeable number, because it can be changed into a prime (61969969) 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, 59067 + ... + 60106.

Almost surely, 2^61969960 is an apocalyptic number.

It is an amenable number.

61969960 is an abundant number, since it is smaller than the sum of its proper divisors (88189280).

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

61969960 is a wasteful number, since it uses less digits than its factorization.

61969960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119197 (or 119193 counting only the distinct ones).

The product of its (nonzero) digits is 157464, while the sum is 46.

The square root of 61969960 is about 7872.1001009896. The cubic root of 61969960 is about 395.7252285641.

The spelling of 61969960 in words is "sixty-one million, nine hundred sixty-nine thousand, nine hundred sixty".