690143627 has 4 divisors (see below), whose sum is σ = 692499360. Its totient is φ = 687787896.

The previous prime is 690143621. The next prime is 690143639. The reversal of 690143627 is 726341096.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 690143627 - 2¹⁰ = 690142603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (690143621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1177427 + ... + 1178012.

It is an arithmetic number, because the mean of its divisors is an integer number (173124840).

Almost surely, 2^690143627 is an apocalyptic number.

690143627 is a deficient number, since it is larger than the sum of its proper divisors (2355733).

690143627 is a wasteful number, since it uses less digits than its factorization.

690143627 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2355732.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 690143627 is about 26270.5848240956. The cubic root of 690143627 is about 883.7169004513.

The spelling of 690143627 in words is "six hundred ninety million, one hundred forty-three thousand, six hundred twenty-seven".