612362021 has 2 divisors, whose sum is σ = 612362022. Its totient is φ = 612362020.

The previous prime is 612361993. The next prime is 612362041. The reversal of 612362021 is 120263216.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 496799521 + 115562500 = 22289^2 + 10750^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-612362021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (612362041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306181010 + 306181011.

It is an arithmetic number, because the mean of its divisors is an integer number (306181011).

Almost surely, 2^612362021 is an apocalyptic number.

It is an amenable number.

612362021 is a deficient number, since it is larger than the sum of its proper divisors (1).

612362021 is an equidigital number, since it uses as much as digits as its factorization.

612362021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 612362021 is about 24745.9495877608. The cubic root of 612362021 is about 849.1858506574.

The spelling of 612362021 in words is "six hundred twelve million, three hundred sixty-two thousand, twenty-one".