697128 has 32 divisors (see below), whose sum is σ = 1800960. Its totient is φ = 224640.

The previous prime is 697127. The next prime is 697133. The reversal of 697128 is 821796.

It is an Ulam number.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (697121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 276 + ... + 1212.

It is an arithmetic number, because the mean of its divisors is an integer number (56280).

2⁶⁹⁷¹²⁸ 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 697128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (900480).

697128 is an abundant number, since it is smaller than the sum of its proper divisors (1103832).

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

697128 is a wasteful number, since it uses less digits than its factorization.

697128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 977 (or 973 counting only the distinct ones).

The product of its digits is 6048, while the sum is 33.

The square root of 697128 is about 834.9419141473. The cubic root of 697128 is about 88.6688022802.

The spelling of 697128 in words is "six hundred ninety-seven thousand, one hundred twenty-eight".