612473566 has 4 divisors (see below), whose sum is σ = 918710352. Its totient is φ = 306236782.

The previous prime is 612473549. The next prime is 612473567. The reversal of 612473566 is 665374216.

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

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612473567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 153118390 + ... + 153118393.

It is an arithmetic number, because the mean of its divisors is an integer number (229677588).

Almost surely, 2^612473566 is an apocalyptic number.

612473566 is a deficient number, since it is larger than the sum of its proper divisors (306236786).

612473566 is a wasteful number, since it uses less digits than its factorization.

612473566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306236785.

The product of its digits is 181440, while the sum is 40.

The square root of 612473566 is about 24748.2032883197. The cubic root of 612473566 is about 849.2374087671.

The spelling of 612473566 in words is "six hundred twelve million, four hundred seventy-three thousand, five hundred sixty-six".