621493007 has 2 divisors, whose sum is σ = 621493008. Its totient is φ = 621493006.

The previous prime is 621492967. The next prime is 621493009. The reversal of 621493007 is 700394126.

621493007 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 621493007 - 2⁶ = 621492943 is a prime.

Together with 621493009, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (621493009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310746503 + 310746504.

It is an arithmetic number, because the mean of its divisors is an integer number (310746504).

Almost surely, 2^621493007 is an apocalyptic number.

621493007 is a deficient number, since it is larger than the sum of its proper divisors (1).

621493007 is an equidigital number, since it uses as much as digits as its factorization.

621493007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 621493007 is about 24929.7614709808. The cubic root of 621493007 is about 853.3858065911.

It can be divided in two parts, 62149 and 3007, that added together give a palindrome (65156).

The spelling of 621493007 in words is "six hundred twenty-one million, four hundred ninety-three thousand, seven".