697542780 has 192 divisors, whose sum is σ = 2227470336. Its totient is φ = 161568000.

The previous prime is 697542757. The next prime is 697542803. The reversal of 697542780 is 87245796.

697542780 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (697542757) and next prime (697542803).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2107215 + ... + 2107545.

It is an arithmetic number, because the mean of its divisors is an integer number (11601408).

Almost surely, 2^697542780 is an apocalyptic number.

697542780 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 697542780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1113735168).

697542780 is an abundant number, since it is smaller than the sum of its proper divisors (1529927556).

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

697542780 is a wasteful number, since it uses less digits than its factorization.

697542780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488 (or 486 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 48.

The square root of 697542780 is about 26411.0351936459. The cubic root of 697542780 is about 886.8638429963.

The spelling of 697542780 in words is "six hundred ninety-seven million, five hundred forty-two thousand, seven hundred eighty".