690670543 has 16 divisors (see below), whose sum is σ = 756090720. Its totient is φ = 628300800.

The previous prime is 690670511. The next prime is 690670571. The reversal of 690670543 is 345076096.

It is a cyclic number.

It is not a de Polignac number, because 690670543 - 2⁵ = 690670511 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 690670496 and 690670505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690671543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71428 + ... + 80518.

It is an arithmetic number, because the mean of its divisors is an integer number (47255670).

Almost surely, 2^690670543 is an apocalyptic number.

690670543 is a deficient number, since it is larger than the sum of its proper divisors (65420177).

690670543 is a wasteful number, since it uses less digits than its factorization.

690670543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9258.

The product of its (nonzero) digits is 136080, while the sum is 40.

The square root of 690670543 is about 26280.6115415909. The cubic root of 690670543 is about 883.9417454941.

The spelling of 690670543 in words is "six hundred ninety million, six hundred seventy thousand, five hundred forty-three".