61961694 has 8 divisors (see below), whose sum is σ = 123923400. Its totient is φ = 20653896.

The previous prime is 61961687. The next prime is 61961707. The reversal of 61961694 is 49616916.

It is a sphenic number, since it is the product of 3 distinct primes.

61961694 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5163469 + ... + 5163480.

It is an arithmetic number, because the mean of its divisors is an integer number (15490425).

Almost surely, 2^61961694 is an apocalyptic number.

61961694 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

61961694 is a wasteful number, since it uses less digits than its factorization.

61961694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10326954.

The product of its digits is 69984, while the sum is 42.

The square root of 61961694 is about 7871.5750647504. The cubic root of 61961694 is about 395.7076328872.

The spelling of 61961694 in words is "sixty-one million, nine hundred sixty-one thousand, six hundred ninety-four".