622462391 has 2 divisors, whose sum is σ = 622462392. Its totient is φ = 622462390.

The previous prime is 622462387. The next prime is 622462447. The reversal of 622462391 is 193264226.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 622462391 - 2² = 622462387 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (622422391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311231195 + 311231196.

It is an arithmetic number, because the mean of its divisors is an integer number (311231196).

Almost surely, 2^622462391 is an apocalyptic number.

622462391 is a deficient number, since it is larger than the sum of its proper divisors (1).

622462391 is an equidigital number, since it uses as much as digits as its factorization.

622462391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 35.

The square root of 622462391 is about 24949.1961994770. The cubic root of 622462391 is about 853.8292703146.

The spelling of 622462391 in words is "six hundred twenty-two million, four hundred sixty-two thousand, three hundred ninety-one".