61620898 has 8 divisors (see below), whose sum is σ = 93998160. Its totient is φ = 30288180.

The previous prime is 61620877. The next prime is 61620917. The reversal of 61620898 is 89802616.

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 61620898.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 260988 + ... + 261223.

It is an arithmetic number, because the mean of its divisors is an integer number (11749770).

Almost surely, 2^61620898 is an apocalyptic number.

61620898 is a deficient number, since it is larger than the sum of its proper divisors (32377262).

61620898 is a wasteful number, since it uses less digits than its factorization.

61620898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 522272.

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 61620898 is about 7849.8979611203. The cubic root of 61620898 is about 394.9808205183.

The spelling of 61620898 in words is "sixty-one million, six hundred twenty thousand, eight hundred ninety-eight".