10721698 has 12 divisors (see below), whose sum is σ = 17415378. Its totient is φ = 4948320.

The previous prime is 10721653. The next prime is 10721723. The reversal of 10721698 is 89612701.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 2271049 + 8450649 = 1507^2 + 2907^2 .

It is a super-2 number, since 2×10721698² = 229909616006408, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15523 + ... + 16198.

Almost surely, 2^10721698 is an apocalyptic number.

10721698 is a deficient number, since it is larger than the sum of its proper divisors (6693680).

10721698 is a wasteful number, since it uses less digits than its factorization.

10721698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31749 (or 31736 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 34.

The square root of 10721698 is about 3274.4004031273. The cubic root of 10721698 is about 220.5063954693.

The spelling of 10721698 in words is "ten million, seven hundred twenty-one thousand, six hundred ninety-eight".