697216347 has 12 divisors (see below), whose sum is σ = 1041817920. Its totient is φ = 448782768.

The previous prime is 697216337. The next prime is 697216349. The reversal of 697216347 is 743612796.

697216347 is a `hidden beast` number, since 6 + 9 + 7 + 2 + 1 + 634 + 7 = 666.

It is not a de Polignac number, because 697216347 - 2¹¹ = 697214299 is a prime.

It is a super-2 number, since 2×697216347² = 972221269048048818, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (697216349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1335403 + ... + 1335924.

It is an arithmetic number, because the mean of its divisors is an integer number (86818160).

Almost surely, 2^697216347 is an apocalyptic number.

697216347 is a deficient number, since it is larger than the sum of its proper divisors (344601573).

697216347 is a wasteful number, since it uses less digits than its factorization.

697216347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2671362 (or 2671359 counting only the distinct ones).

The product of its digits is 381024, while the sum is 45.

The square root of 697216347 is about 26404.8546104689. The cubic root of 697216347 is about 886.7254778642.

The spelling of 697216347 in words is "six hundred ninety-seven million, two hundred sixteen thousand, three hundred forty-seven".