61856494 has 8 divisors (see below), whose sum is σ = 106039728. Its totient is φ = 26509920.

The previous prime is 61856479. The next prime is 61856503. The reversal of 61856494 is 49465816.

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

It is a self number, because there is not a number n which added to its sum of digits gives 61856494.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2209147 + ... + 2209174.

It is an arithmetic number, because the mean of its divisors is an integer number (13254966).

Almost surely, 2^61856494 is an apocalyptic number.

61856494 is a deficient number, since it is larger than the sum of its proper divisors (44183234).

61856494 is a wasteful number, since it uses less digits than its factorization.

61856494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4418330.

The product of its digits is 207360, while the sum is 43.

The square root of 61856494 is about 7864.8899547292. The cubic root of 61856494 is about 395.4835588301.

The spelling of 61856494 in words is "sixty-one million, eight hundred fifty-six thousand, four hundred ninety-four".