697238641 has 4 divisors (see below), whose sum is σ = 760623984. Its totient is φ = 633853300.

The previous prime is 697238609. The next prime is 697238669. The reversal of 697238641 is 146832796.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 697238641 - 2⁵ = 697238609 is a prime.

It is a super-2 number, since 2×697238641² = 972283445007053762, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 697238591 and 697238600.

It is not an unprimeable number, because it can be changed into a prime (697238141) 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 3 ways as a sum of consecutive naturals, for example, 31692655 + ... + 31692676.

It is an arithmetic number, because the mean of its divisors is an integer number (190155996).

Almost surely, 2^697238641 is an apocalyptic number.

It is an amenable number.

697238641 is a deficient number, since it is larger than the sum of its proper divisors (63385343).

697238641 is a wasteful number, since it uses less digits than its factorization.

697238641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63385342.

The product of its digits is 435456, while the sum is 46.

The square root of 697238641 is about 26405.2767643136. The cubic root of 697238641 is about 886.7349289943.

The spelling of 697238641 in words is "six hundred ninety-seven million, two hundred thirty-eight thousand, six hundred forty-one".