690070039 has 2 divisors, whose sum is σ = 690070040. Its totient is φ = 690070038.

The previous prime is 690070037. The next prime is 690070061. The reversal of 690070039 is 930070096.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 690070039 - 2¹ = 690070037 is a prime.

Together with 690070037, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 690069986 and 690070013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (690070037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 345035019 + 345035020.

It is an arithmetic number, because the mean of its divisors is an integer number (345035020).

Almost surely, 2^690070039 is an apocalyptic number.

690070039 is a deficient number, since it is larger than the sum of its proper divisors (1).

690070039 is an equidigital number, since it uses as much as digits as its factorization.

690070039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10206, while the sum is 34.

The square root of 690070039 is about 26269.1842088787. The cubic root of 690070039 is about 883.6854899505.

The spelling of 690070039 in words is "six hundred ninety million, seventy thousand, thirty-nine".