697446643 has 4 divisors (see below), whose sum is σ = 700951600. Its totient is φ = 693941688.

The previous prime is 697446619. The next prime is 697446653. The reversal of 697446643 is 346644796.

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

It is a cyclic number.

It is not a de Polignac number, because 697446643 - 2¹³ = 697438451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (697446653) 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, 1752180 + ... + 1752577.

It is an arithmetic number, because the mean of its divisors is an integer number (175237900).

Almost surely, 2^697446643 is an apocalyptic number.

697446643 is a deficient number, since it is larger than the sum of its proper divisors (3504957).

697446643 is a wasteful number, since it uses less digits than its factorization.

697446643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3504956.

The product of its digits is 2612736, while the sum is 49.

The square root of 697446643 is about 26409.2151151828. The cubic root of 697446643 is about 886.8230978984.

The spelling of 697446643 in words is "six hundred ninety-seven million, four hundred forty-six thousand, six hundred forty-three".