61800902 has 8 divisors (see below), whose sum is σ = 92792712. Its totient is φ = 30870000.

The previous prime is 61800889. The next prime is 61800919. The reversal of 61800902 is 20900816.

61800902 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12599 + ... + 16802.

It is an arithmetic number, because the mean of its divisors is an integer number (11599089).

Almost surely, 2^61800902 is an apocalyptic number.

61800902 is a deficient number, since it is larger than the sum of its proper divisors (30991810).

61800902 is a wasteful number, since it uses less digits than its factorization.

61800902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30454.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 61800902 is about 7861.3549722678. The cubic root of 61800902 is about 395.3650462847.

The spelling of 61800902 in words is "sixty-one million, eight hundred thousand, nine hundred two".