1097210681 has 8 divisors (see below), whose sum is σ = 1256472000. Its totient is φ = 938578608.

The previous prime is 1097210657. The next prime is 1097210687. The reversal of 1097210681 is 1860127901.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1097210681 - 2¹⁸ = 1096948537 is a prime.

It is a super-2 number, since 2×1097210681² = 2407742557000967522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1097210687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 153566 + ... + 160551.

It is an arithmetic number, because the mean of its divisors is an integer number (157059000).

Almost surely, 2^1097210681 is an apocalyptic number.

It is an amenable number.

1097210681 is a deficient number, since it is larger than the sum of its proper divisors (159261319).

1097210681 is an equidigital number, since it uses as much as digits as its factorization.

1097210681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314623.

The product of its (nonzero) digits is 6048, while the sum is 35.

The square root of 1097210681 is about 33124.1706462215. The cubic root of 1097210681 is about 1031.4068440181.

The spelling of 1097210681 in words is "one billion, ninety-seven million, two hundred ten thousand, six hundred eighty-one".