10700721 has 8 divisors (see below), whose sum is σ = 15852960. Its totient is φ = 7133796.

The previous prime is 10700719. The next prime is 10700759. The reversal of 10700721 is 12700701.

10700721 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 10700721 - 2¹ = 10700719 is a prime.

It is a super-2 number, since 2×10700721² = 229010859839682, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10700694 and 10700703.

It is not an unprimeable number, because it can be changed into a prime (10700791) 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, 198135 + ... + 198188.

It is an arithmetic number, because the mean of its divisors is an integer number (1981620).

Almost surely, 2^10700721 is an apocalyptic number.

It is an amenable number.

10700721 is a deficient number, since it is larger than the sum of its proper divisors (5152239).

10700721 is an equidigital number, since it uses as much as digits as its factorization.

10700721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396332 (or 396326 counting only the distinct ones).

The product of its (nonzero) digits is 98, while the sum is 18.

The square root of 10700721 is about 3271.1956529685. The cubic root of 10700721 is about 220.3624946749.

The spelling of 10700721 in words is "ten million, seven hundred thousand, seven hundred twenty-one".