612644073 has 8 divisors (see below), whose sum is σ = 816979488. Its totient is φ = 408369024.

The previous prime is 612644051. The next prime is 612644101. The reversal of 612644073 is 370446216.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 612644073 - 2²² = 608449769 is a prime.

It is not an unprimeable number, because it can be changed into a prime (612644033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20761 + ... + 40697.

It is an arithmetic number, because the mean of its divisors is an integer number (102122436).

Almost surely, 2^612644073 is an apocalyptic number.

It is an amenable number.

612644073 is a deficient number, since it is larger than the sum of its proper divisors (204335415).

612644073 is a wasteful number, since it uses less digits than its factorization.

612644073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30183.

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 612644073 is about 24751.6478845349. The cubic root of 612644073 is about 849.3162080797.

The spelling of 612644073 in words is "six hundred twelve million, six hundred forty-four thousand, seventy-three".