612981023 has 4 divisors (see below), whose sum is σ = 613099560. Its totient is φ = 612862488.

The previous prime is 612981007. The next prime is 612981029. The reversal of 612981023 is 320189216.

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 612981023 - 2⁴ = 612981007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612981029) 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, 51140 + ... + 61977.

It is an arithmetic number, because the mean of its divisors is an integer number (153274890).

Almost surely, 2^612981023 is an apocalyptic number.

612981023 is a deficient number, since it is larger than the sum of its proper divisors (118537).

612981023 is a wasteful number, since it uses less digits than its factorization.

612981023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118536.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 612981023 is about 24758.4535664084. The cubic root of 612981023 is about 849.4718855547.

The spelling of 612981023 in words is "six hundred twelve million, nine hundred eighty-one thousand, twenty-three".