690140197 has 8 divisors (see below), whose sum is σ = 714355712. Its totient is φ = 666046800.

The previous prime is 690140179. The next prime is 690140219. The reversal of 690140197 is 791041096.

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 690140197 - 2¹⁹ = 689615909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690140117) 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, 18954 + ... + 41707.

It is an arithmetic number, because the mean of its divisors is an integer number (89294464).

Almost surely, 2^690140197 is an apocalyptic number.

It is an amenable number.

690140197 is a deficient number, since it is larger than the sum of its proper divisors (24215515).

690140197 is a wasteful number, since it uses less digits than its factorization.

690140197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61059.

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 690140197 is about 26270.5195418743. The cubic root of 690140197 is about 883.7154364304.

The spelling of 690140197 in words is "six hundred ninety million, one hundred forty thousand, one hundred ninety-seven".