612406477 has 2 divisors, whose sum is σ = 612406478. Its totient is φ = 612406476.

The previous prime is 612406471. The next prime is 612406513. The reversal of 612406477 is 774604216.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 380484036 + 231922441 = 19506^2 + 15229^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-612406477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (612406471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306203238 + 306203239.

It is an arithmetic number, because the mean of its divisors is an integer number (306203239).

Almost surely, 2^612406477 is an apocalyptic number.

It is an amenable number.

612406477 is a deficient number, since it is larger than the sum of its proper divisors (1).

612406477 is an equidigital number, since it uses as much as digits as its factorization.

612406477 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56448, while the sum is 37.

The square root of 612406477 is about 24746.8478194699. The cubic root of 612406477 is about 849.2063997723.

The spelling of 612406477 in words is "six hundred twelve million, four hundred six thousand, four hundred seventy-seven".