697050081 has 48 divisors (see below), whose sum is σ = 1268082816. Its totient is φ = 359106048.

The previous prime is 697050077. The next prime is 697050113. The reversal of 697050081 is 180050796.

697050081 is a `hidden beast` number, since 6 + 9 + 70 + 500 + 81 = 666.

It is not a de Polignac number, because 697050081 - 2² = 697050077 is a prime.

It is a super-2 number, since 2×697050081² = 971757630844213122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (697050181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 25321 + ... + 45113.

It is an arithmetic number, because the mean of its divisors is an integer number (26418392).

Almost surely, 2^697050081 is an apocalyptic number.

It is an amenable number.

697050081 is a deficient number, since it is larger than the sum of its proper divisors (571032735).

697050081 is a wasteful number, since it uses less digits than its factorization.

697050081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19862 (or 19859 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The square root of 697050081 is about 26401.7060244220. The cubic root of 697050081 is about 886.6549861056.

The spelling of 697050081 in words is "six hundred ninety-seven million, fifty thousand, eighty-one".