690567667 has 8 divisors (see below), whose sum is σ = 709573392. Its totient is φ = 671580000.

The previous prime is 690567653. The next prime is 690567697. The reversal of 690567667 is 766765096.

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

It is a cyclic number.

It is not a de Polignac number, because 690567667 - 2⁷ = 690567539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (690567637) 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, 117417 + ... + 123157.

It is an arithmetic number, because the mean of its divisors is an integer number (88696674).

Almost surely, 2^690567667 is an apocalyptic number.

690567667 is a deficient number, since it is larger than the sum of its proper divisors (19005725).

690567667 is a wasteful number, since it uses less digits than its factorization.

690567667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9029.

The product of its (nonzero) digits is 2857680, while the sum is 52.

The square root of 690567667 is about 26278.6542083114. The cubic root of 690567667 is about 883.8978553415.

The spelling of 690567667 in words is "six hundred ninety million, five hundred sixty-seven thousand, six hundred sixty-seven".