612173039 has 2 divisors, whose sum is σ = 612173040. Its totient is φ = 612173038.

The previous prime is 612172973. The next prime is 612173041. The reversal of 612173039 is 930371216.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-612173039 is a prime.

Together with 612173041, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 612172996 and 612173014.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (612173059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306086519 + 306086520.

It is an arithmetic number, because the mean of its divisors is an integer number (306086520).

Almost surely, 2^612173039 is an apocalyptic number.

612173039 is a deficient number, since it is larger than the sum of its proper divisors (1).

612173039 is an equidigital number, since it uses as much as digits as its factorization.

612173039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6804, while the sum is 32.

The square root of 612173039 is about 24742.1308500299. The cubic root of 612173039 is about 849.0984854787.

The spelling of 612173039 in words is "six hundred twelve million, one hundred seventy-three thousand, thirty-nine".