620501279 has 2 divisors, whose sum is σ = 620501280. Its totient is φ = 620501278.

The previous prime is 620501269. The next prime is 620501311. The reversal of 620501279 is 972105026.

It is an a-pointer prime, because the next prime (620501311) can be obtained adding 620501279 to its sum of digits (32).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 620501279 - 2²⁰ = 619452703 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (620501249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310250639 + 310250640.

It is an arithmetic number, because the mean of its divisors is an integer number (310250640).

Almost surely, 2^620501279 is an apocalyptic number.

620501279 is a deficient number, since it is larger than the sum of its proper divisors (1).

620501279 is an equidigital number, since it uses as much as digits as its factorization.

620501279 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 620501279 is about 24909.8630867373. The cubic root of 620501279 is about 852.9316437094.

The spelling of 620501279 in words is "six hundred twenty million, five hundred one thousand, two hundred seventy-nine".