697233161 has 4 divisors (see below), whose sum is σ = 700225812. Its totient is φ = 694240512.

The previous prime is 697233107. The next prime is 697233169. The reversal of 697233161 is 161332796.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 173738761 + 523494400 = 13181^2 + 22880^2 .

It is a cyclic number.

It is not a de Polignac number, because 697233161 - 2¹⁴ = 697216777 is a prime.

It is a super-2 number, since 2×697233161² = 972268161596103842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (697233169) 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, 1495976 + ... + 1496441.

It is an arithmetic number, because the mean of its divisors is an integer number (175056453).

Almost surely, 2^697233161 is an apocalyptic number.

It is an amenable number.

697233161 is a deficient number, since it is larger than the sum of its proper divisors (2992651).

697233161 is a wasteful number, since it uses less digits than its factorization.

697233161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2992650.

The product of its digits is 40824, while the sum is 38.

The square root of 697233161 is about 26405.1729969716. The cubic root of 697233161 is about 886.7326058681.

The spelling of 697233161 in words is "six hundred ninety-seven million, two hundred thirty-three thousand, one hundred sixty-one".