612121885 has 32 divisors (see below), whose sum is σ = 790663680. Its totient is φ = 453868800.

The previous prime is 612121859. The next prime is 612121897. The reversal of 612121885 is 588121216.

It is not a de Polignac number, because 612121885 - 2¹⁵ = 612089117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 612121885.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 497451 + ... + 498679.

It is an arithmetic number, because the mean of its divisors is an integer number (24708240).

Almost surely, 2^612121885 is an apocalyptic number.

It is an amenable number.

612121885 is a deficient number, since it is larger than the sum of its proper divisors (178541795).

612121885 is a wasteful number, since it uses less digits than its factorization.

612121885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1389.

The product of its digits is 7680, while the sum is 34.

The square root of 612121885 is about 24741.0970856185. The cubic root of 612121885 is about 849.0748342173.

The spelling of 612121885 in words is "six hundred twelve million, one hundred twenty-one thousand, eight hundred eighty-five".