10501681 has 8 divisors (see below), whose sum is σ = 10715328. Its totient is φ = 10290000.

The previous prime is 10501657. The next prime is 10501693. The reversal of 10501681 is 18610501.

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

It is a 4-Lehmer number, since φ(10501681) divides (10501681-1)⁴.

It is a cyclic number.

It is not a de Polignac number, because 10501681 - 2⁵ = 10501649 is a prime.

It is a super-2 number, since 2×10501681² = 220570607651522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10501651) 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, 14631 + ... + 15331.

It is an arithmetic number, because the mean of its divisors is an integer number (1339416).

Almost surely, 2^10501681 is an apocalyptic number.

It is an amenable number.

10501681 is a deficient number, since it is larger than the sum of its proper divisors (213647).

10501681 is an equidigital number, since it uses as much as digits as its factorization.

10501681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 983.

The product of its (nonzero) digits is 240, while the sum is 22.

The square root of 10501681 is about 3240.6297227545. The cubic root of 10501681 is about 218.9876420402.

The spelling of 10501681 in words is "ten million, five hundred one thousand, six hundred eighty-one".