690477474443 has 2 divisors, whose sum is σ = 690477474444. Its totient is φ = 690477474442.

The previous prime is 690477474437. The next prime is 690477474497. The reversal of 690477474443 is 344474774096.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-690477474443 is a prime.

It is not a weakly prime, because it can be changed into another prime (690477474413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 345238737221 + 345238737222.

It is an arithmetic number, because the mean of its divisors is an integer number (345238737222).

Almost surely, 2^690477474443 is an apocalyptic number.

690477474443 is a deficient number, since it is larger than the sum of its proper divisors (1).

690477474443 is an equidigital number, since it uses as much as digits as its factorization.

690477474443 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56899584, while the sum is 59.

The spelling of 690477474443 in words is "six hundred ninety billion, four hundred seventy-seven million, four hundred seventy-four thousand, four hundred forty-three".