697872787980 has 24 divisors (see below), whose sum is σ = 1954043806512. Its totient is φ = 186099410112.

The previous prime is 697872787979. The next prime is 697872787999. The reversal of 697872787980 is 89787278796.

It is a junction number, because it is equal to n+sod(n) for n = 697872787896 and 697872787905.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5815606507 + ... + 5815606626.

It is an arithmetic number, because the mean of its divisors is an integer number (81418491938).

Almost surely, 2^697872787980 is an apocalyptic number.

697872787980 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

697872787980 is an abundant number, since it is smaller than the sum of its proper divisors (1256171018532).

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

697872787980 is a wasteful number, since it uses less digits than its factorization.

697872787980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11631213145 (or 11631213143 counting only the distinct ones).

The product of its (nonzero) digits is 1194891264, while the sum is 78.

The spelling of 697872787980 in words is "six hundred ninety-seven billion, eight hundred seventy-two million, seven hundred eighty-seven thousand, nine hundred eighty".