690112039 has 2 divisors, whose sum is σ = 690112040. Its totient is φ = 690112038.

The previous prime is 690112021. The next prime is 690112067. The reversal of 690112039 is 930211096.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 690112039 - 2¹⁹ = 689587751 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 690112039.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (690112009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 345056019 + 345056020.

It is an arithmetic number, because the mean of its divisors is an integer number (345056020).

Almost surely, 2^690112039 is an apocalyptic number.

690112039 is a deficient number, since it is larger than the sum of its proper divisors (1).

690112039 is an equidigital number, since it uses as much as digits as its factorization.

690112039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2916, while the sum is 31.

The square root of 690112039 is about 26269.9836124806. The cubic root of 690112039 is about 883.7034176176.

The spelling of 690112039 in words is "six hundred ninety million, one hundred twelve thousand, thirty-nine".