397702681782 has 32 divisors (see below), whose sum is σ = 909250977024. Its totient is φ = 113602303200.

The previous prime is 397702681669. The next prime is 397702681787. The reversal of 397702681782 is 287186207793.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397702681787) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 947469 + ... + 1301192.

It is an arithmetic number, because the mean of its divisors is an integer number (28414093032).

Almost surely, 2^397702681782 is an apocalyptic number.

397702681782 is an abundant number, since it is smaller than the sum of its proper divisors (511548295242).

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

397702681782 is a wasteful number, since it uses less digits than its factorization.

397702681782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2252884.

The product of its (nonzero) digits is 14224896, while the sum is 60.

The spelling of 397702681782 in words is "three hundred ninety-seven billion, seven hundred two million, six hundred eighty-one thousand, seven hundred eighty-two".