705902987 has 2 divisors, whose sum is σ = 705902988. Its totient is φ = 705902986.

The previous prime is 705902969. The next prime is 705902993. The reversal of 705902987 is 789209507.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 705902987 - 2⁸ = 705902731 is a prime.

It is not a weakly prime, because it can be changed into another prime (705902927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 352951493 + 352951494.

It is an arithmetic number, because the mean of its divisors is an integer number (352951494).

Almost surely, 2^705902987 is an apocalyptic number.

705902987 is a deficient number, since it is larger than the sum of its proper divisors (1).

705902987 is an equidigital number, since it uses as much as digits as its factorization.

705902987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 317520, while the sum is 47.

The square root of 705902987 is about 26568.8348822450. The cubic root of 705902987 is about 890.3928690970.

The spelling of 705902987 in words is "seven hundred five million, nine hundred two thousand, nine hundred eighty-seven".