690863143 has 16 divisors (see below), whose sum is σ = 722292480. Its totient is φ = 659990016.

The previous prime is 690863113. The next prime is 690863171. The reversal of 690863143 is 341368096.

It is a cyclic number.

It is not a de Polignac number, because 690863143 - 2²⁵ = 657308711 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 690863096 and 690863105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690863113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2049871 + ... + 2050207.

It is an arithmetic number, because the mean of its divisors is an integer number (45143280).

Almost surely, 2^690863143 is an apocalyptic number.

690863143 is a deficient number, since it is larger than the sum of its proper divisors (31429337).

690863143 is a wasteful number, since it uses less digits than its factorization.

690863143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 906.

The product of its (nonzero) digits is 93312, while the sum is 40.

The square root of 690863143 is about 26284.2755844630. The cubic root of 690863143 is about 884.0239030241.

The spelling of 690863143 in words is "six hundred ninety million, eight hundred sixty-three thousand, one hundred forty-three".