61816994 has 8 divisors (see below), whose sum is σ = 97605840. Its totient is φ = 29281716.

The previous prime is 61816969. The next prime is 61817011. The reversal of 61816994 is 49961816.

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

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, 813344 + ... + 813419.

It is an arithmetic number, because the mean of its divisors is an integer number (12200730).

Almost surely, 2^61816994 is an apocalyptic number.

61816994 is a deficient number, since it is larger than the sum of its proper divisors (35788846).

61816994 is a wasteful number, since it uses less digits than its factorization.

61816994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1626784.

The product of its digits is 93312, while the sum is 44.

The square root of 61816994 is about 7862.3783933362. The cubic root of 61816994 is about 395.3993589564.

The spelling of 61816994 in words is "sixty-one million, eight hundred sixteen thousand, nine hundred ninety-four".