612073643 has 2 divisors, whose sum is σ = 612073644. Its totient is φ = 612073642.

The previous prime is 612073633. The next prime is 612073697. The reversal of 612073643 is 346370216.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 612073643 - 2²² = 607879339 is a prime.

It is not a weakly prime, because it can be changed into another prime (612073603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306036821 + 306036822.

It is an arithmetic number, because the mean of its divisors is an integer number (306036822).

Almost surely, 2^612073643 is an apocalyptic number.

612073643 is a deficient number, since it is larger than the sum of its proper divisors (1).

612073643 is an equidigital number, since it uses as much as digits as its factorization.

612073643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 612073643 is about 24740.1221298521. The cubic root of 612073643 is about 849.0525281236.

The spelling of 612073643 in words is "six hundred twelve million, seventy-three thousand, six hundred forty-three".