697777423056 has 480 divisors, whose sum is σ = 2408931532800. Its totient is φ = 184011264000.

The previous prime is 697777422973. The next prime is 697777423081. The reversal of 697777423056 is 650324777796.

697777423056 is a `hidden beast` number, since 6 + 97 + 7 + 77 + 423 + 0 + 56 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a junction number, because it is equal to n+sod(n) for n = 697777422984 and 697777423002.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 759278565 + ... + 759279483.

It is an arithmetic number, because the mean of its divisors is an integer number (5018607360).

Almost surely, 2^697777423056 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 697777423056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1204465766400).

697777423056 is an abundant number, since it is smaller than the sum of its proper divisors (1711154109744).

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

697777423056 is a wasteful number, since it uses less digits than its factorization.

697777423056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1767 (or 1758 counting only the distinct ones).

The product of its (nonzero) digits is 93350880, while the sum is 63.

The spelling of 697777423056 in words is "six hundred ninety-seven billion, seven hundred seventy-seven million, four hundred twenty-three thousand, fifty-six".