612115477 has 2 divisors, whose sum is σ = 612115478. Its totient is φ = 612115476.

The previous prime is 612115459. The next prime is 612115523. The reversal of 612115477 is 774511216.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 596043396 + 16072081 = 24414^2 + 4009^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-612115477 is a prime.

It is equal to p_31923862 and since 612115477 and 31923862 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (612115577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306057738 + 306057739.

It is an arithmetic number, because the mean of its divisors is an integer number (306057739).

Almost surely, 2^612115477 is an apocalyptic number.

It is an amenable number.

612115477 is a deficient number, since it is larger than the sum of its proper divisors (1).

612115477 is an equidigital number, since it uses as much as digits as its factorization.

612115477 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11760, while the sum is 34.

The square root of 612115477 is about 24740.9675841508. The cubic root of 612115477 is about 849.0718713594.

The spelling of 612115477 in words is "six hundred twelve million, one hundred fifteen thousand, four hundred seventy-seven".