61695940 has 12 divisors (see below), whose sum is σ = 129561516. Its totient is φ = 24678368.

The previous prime is 61695937. The next prime is 61695961. The reversal of 61695940 is 4959616.

It can be written as a sum of positive squares in 2 ways, for example, as 46703556 + 14992384 = 6834^2 + 3872^2 .

It is a junction number, because it is equal to n+sod(n) for n = 61695893 and 61695902.

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, 1542379 + ... + 1542418.

It is an arithmetic number, because the mean of its divisors is an integer number (10796793).

Almost surely, 2^61695940 is an apocalyptic number.

It is an amenable number.

61695940 is an abundant number, since it is smaller than the sum of its proper divisors (67865576).

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

61695940 is a wasteful number, since it uses less digits than its factorization.

61695940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3084806 (or 3084804 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 40.

The square root of 61695940 is about 7854.6763141456. The cubic root of 61695940 is about 395.1410915080.

The spelling of 61695940 in words is "sixty-one million, six hundred ninety-five thousand, nine hundred forty".