690269143 has 8 divisors (see below), whose sum is σ = 702380160. Its totient is φ = 678171960.

The previous prime is 690269117. The next prime is 690269147. The reversal of 690269143 is 341962096.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-690269143 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 690269096 and 690269105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690269147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 186198 + ... + 189868.

It is an arithmetic number, because the mean of its divisors is an integer number (87797520).

Almost surely, 2^690269143 is an apocalyptic number.

690269143 is a deficient number, since it is larger than the sum of its proper divisors (12111017).

690269143 is a wasteful number, since it uses less digits than its factorization.

690269143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6917.

The product of its (nonzero) digits is 69984, while the sum is 40.

The square root of 690269143 is about 26272.9736230979. The cubic root of 690269143 is about 883.7704708882.

The spelling of 690269143 in words is "six hundred ninety million, two hundred sixty-nine thousand, one hundred forty-three".