697084642 has 4 divisors (see below), whose sum is σ = 1045626966. Its totient is φ = 348542320.

The previous prime is 697084639. The next prime is 697084649. The reversal of 697084642 is 246480796.

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 only one way, i.e., 481846401 + 215238241 = 21951^2 + 14671^2 .

It is a super-2 number, since 2×697084642² = 971853996224536328, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 697084592 and 697084601.

It is not an unprimeable number, because it can be changed into a prime (697084649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174271159 + ... + 174271162.

Almost surely, 2^697084642 is an apocalyptic number.

697084642 is a deficient number, since it is larger than the sum of its proper divisors (348542324).

697084642 is a wasteful number, since it uses less digits than its factorization.

697084642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348542323.

The product of its (nonzero) digits is 580608, while the sum is 46.

The square root of 697084642 is about 26402.3605384064. The cubic root of 697084642 is about 886.6696398478.

The spelling of 697084642 in words is "six hundred ninety-seven million, eighty-four thousand, six hundred forty-two".