61839902 has 8 divisors (see below), whose sum is σ = 93241056. Its totient is φ = 30759552.

The previous prime is 61839887. The next prime is 61839929. The reversal of 61839902 is 20993816.

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

It is a congruent number.

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, 79718 + ... + 80489.

It is an arithmetic number, because the mean of its divisors is an integer number (11655132).

Almost surely, 2^61839902 is an apocalyptic number.

61839902 is a deficient number, since it is larger than the sum of its proper divisors (31401154).

61839902 is a wasteful number, since it uses less digits than its factorization.

61839902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160402.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 61839902 is about 7863.8350694810. The cubic root of 61839902 is about 395.4481949872.

The spelling of 61839902 in words is "sixty-one million, eight hundred thirty-nine thousand, nine hundred two".