61856694 has 12 divisors (see below), whose sum is σ = 134022876. Its totient is φ = 20618892.

The previous prime is 61856677. The next prime is 61856699. The reversal of 61856694 is 49665816.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61856699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1718224 + ... + 1718259.

It is an arithmetic number, because the mean of its divisors is an integer number (11168573).

Almost surely, 2^61856694 is an apocalyptic number.

61856694 is an abundant number, since it is smaller than the sum of its proper divisors (72166182).

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

61856694 is a wasteful number, since it uses less digits than its factorization.

61856694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3436491 (or 3436488 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 61856694 is about 7864.9026694550. The cubic root of 61856694 is about 395.4839850673.

The spelling of 61856694 in words is "sixty-one million, eight hundred fifty-six thousand, six hundred ninety-four".