690611227 has 4 divisors (see below), whose sum is σ = 690664896. Its totient is φ = 690557560.

The previous prime is 690611209. The next prime is 690611231. The reversal of 690611227 is 722116096.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-690611227 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 690611192 and 690611201.

It is not an unprimeable number, because it can be changed into a prime (690611267) 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, 5277 + ... + 37537.

It is an arithmetic number, because the mean of its divisors is an integer number (172666224).

Almost surely, 2^690611227 is an apocalyptic number.

690611227 is a deficient number, since it is larger than the sum of its proper divisors (53669).

690611227 is a wasteful number, since it uses less digits than its factorization.

690611227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53668.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 690611227 is about 26279.4830048081. The cubic root of 690611227 is about 883.9164399461.

The spelling of 690611227 in words is "six hundred ninety million, six hundred eleven thousand, two hundred twenty-seven".