620624471 has 2 divisors, whose sum is σ = 620624472. Its totient is φ = 620624470.

The previous prime is 620624443. The next prime is 620624509. The reversal of 620624471 is 174426026.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 620624471 - 2²⁶ = 553515607 is a prime.

It is a super-3 number, since 3×620624471³ (a number of 27 digits) contains 333 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (620624441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310312235 + 310312236.

It is an arithmetic number, because the mean of its divisors is an integer number (310312236).

Almost surely, 2^620624471 is an apocalyptic number.

620624471 is a deficient number, since it is larger than the sum of its proper divisors (1).

620624471 is an equidigital number, since it uses as much as digits as its factorization.

620624471 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 620624471 is about 24912.3357194784. The cubic root of 620624471 is about 852.9880859256.

The spelling of 620624471 in words is "six hundred twenty million, six hundred twenty-four thousand, four hundred seventy-one".