690099643 has 2 divisors, whose sum is σ = 690099644. Its totient is φ = 690099642.

The previous prime is 690099607. The next prime is 690099653. The reversal of 690099643 is 346990096.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 690099643 - 2¹⁷ = 689968571 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 690099593 and 690099602.

It is not a weakly prime, because it can be changed into another prime (690099653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 345049821 + 345049822.

It is an arithmetic number, because the mean of its divisors is an integer number (345049822).

Almost surely, 2^690099643 is an apocalyptic number.

690099643 is a deficient number, since it is larger than the sum of its proper divisors (1).

690099643 is an equidigital number, since it uses as much as digits as its factorization.

690099643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 314928, while the sum is 46.

The square root of 690099643 is about 26269.7476767479. The cubic root of 690099643 is about 883.6981264703.

The spelling of 690099643 in words is "six hundred ninety million, ninety-nine thousand, six hundred forty-three".