697540494 has 32 divisors (see below), whose sum is σ = 1616841216. Its totient is φ = 196489440.

The previous prime is 697540471. The next prime is 697540499. The reversal of 697540494 is 494045796.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (697540499) 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 15 ways as a sum of consecutive naturals, for example, 113977 + ... + 119940.

It is an arithmetic number, because the mean of its divisors is an integer number (50526288).

Almost surely, 2^697540494 is an apocalyptic number.

697540494 is an abundant number, since it is smaller than the sum of its proper divisors (919300722).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

697540494 is a wasteful number, since it uses less digits than its factorization.

697540494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234000.

The product of its (nonzero) digits is 1088640, while the sum is 48.

The square root of 697540494 is about 26410.9919162458. The cubic root of 697540494 is about 886.8628741797.

The spelling of 697540494 in words is "six hundred ninety-seven million, five hundred forty thousand, four hundred ninety-four".