697312 has 48 divisors (see below), whose sum is σ = 1717632. Its totient is φ = 270720.

The previous prime is 697303. The next prime is 697327. The reversal of 697312 is 213796.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

697312 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2323 + ... + 2605.

It is an arithmetic number, because the mean of its divisors is an integer number (35784).

2⁶⁹⁷³¹² 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 697312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (858816).

697312 is an abundant number, since it is smaller than the sum of its proper divisors (1020320).

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

697312 is a wasteful number, since it uses less digits than its factorization.

697312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311 (or 303 counting only the distinct ones).

The product of its digits is 2268, while the sum is 28.

The square root of 697312 is about 835.0520941834. The cubic root of 697312 is about 88.6766026767.

It can be divided in two parts, 69 and 7312, that added together give a triangular number (7381 = T₁₂₁).

The spelling of 697312 in words is "six hundred ninety-seven thousand, three hundred twelve".