612989371 has 4 divisors (see below), whose sum is σ = 613470672. Its totient is φ = 612508072.

The previous prime is 612989357. The next prime is 612989389. The reversal of 612989371 is 173989216.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 612989371 - 2¹³ = 612981179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (612980371) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 238735 + ... + 241288.

It is an arithmetic number, because the mean of its divisors is an integer number (153367668).

Almost surely, 2^612989371 is an apocalyptic number.

612989371 is a deficient number, since it is larger than the sum of its proper divisors (481301).

612989371 is a wasteful number, since it uses less digits than its factorization.

612989371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481300.

The product of its digits is 163296, while the sum is 46.

The square root of 612989371 is about 24758.6221547161. The cubic root of 612989371 is about 849.4757417693.

The spelling of 612989371 in words is "six hundred twelve million, nine hundred eighty-nine thousand, three hundred seventy-one".