620507707 has 2 divisors, whose sum is σ = 620507708. Its totient is φ = 620507706.

The previous prime is 620507689. The next prime is 620507711. The reversal of 620507707 is 707705026.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 620507707 - 2⁷ = 620507579 is a prime.

It is not a weakly prime, because it can be changed into another prime (620507717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310253853 + 310253854.

It is an arithmetic number, because the mean of its divisors is an integer number (310253854).

Almost surely, 2^620507707 is an apocalyptic number.

620507707 is a deficient number, since it is larger than the sum of its proper divisors (1).

620507707 is an equidigital number, since it uses as much as digits as its factorization.

620507707 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20580, while the sum is 34.

The square root of 620507707 is about 24909.9921116005. The cubic root of 620507707 is about 852.9345889763.

The spelling of 620507707 in words is "six hundred twenty million, five hundred seven thousand, seven hundred seven".