620008157 has 2 divisors, whose sum is σ = 620008158. Its totient is φ = 620008156.

The previous prime is 620008117. The next prime is 620008187. The reversal of 620008157 is 751800026.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 537034276 + 82973881 = 23174^2 + 9109^2 .

It is a cyclic number.

It is not a de Polignac number, because 620008157 - 2²⁰ = 618959581 is a prime.

It is a super-2 number, since 2×620008157² = 768820229493073298, which contains 22 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 (620008117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310004078 + 310004079.

It is an arithmetic number, because the mean of its divisors is an integer number (310004079).

Almost surely, 2^620008157 is an apocalyptic number.

It is an amenable number.

620008157 is a deficient number, since it is larger than the sum of its proper divisors (1).

620008157 is an equidigital number, since it uses as much as digits as its factorization.

620008157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 620008157 is about 24899.9629919404. The cubic root of 620008157 is about 852.7056378222.

The spelling of 620008157 in words is "six hundred twenty million, eight thousand, one hundred fifty-seven".