697781376 has 96 divisors (see below), whose sum is σ = 2026724700. Its totient is φ = 230418432.

The previous prime is 697781341. The next prime is 697781389. The reversal of 697781376 is 673187796.

It can be written as a sum of positive squares in 2 ways, for example, as 605160000 + 92621376 = 24600^2 + 9624^2 .

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 122790 + ... + 128346.

Almost surely, 2^697781376 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 697781376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1013362350).

697781376 is an abundant number, since it is smaller than the sum of its proper divisors (1328943324).

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

697781376 is a wasteful number, since it uses less digits than its factorization.

697781376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5686 (or 5671 counting only the distinct ones).

The product of its digits is 2667168, while the sum is 54.

The square root of 697781376 is about 26415.5517829933. The cubic root of 697781376 is about 886.9649493608.

The spelling of 697781376 in words is "six hundred ninety-seven million, seven hundred eighty-one thousand, three hundred seventy-six".