10643650 has 12 divisors (see below), whose sum is σ = 19797282. Its totient is φ = 4257440.

The previous prime is 10643639. The next prime is 10643653. The reversal of 10643650 is 5634601.

It can be written as a sum of positive squares in 3 ways, for example, as 8473921 + 2169729 = 2911^2 + 1473^2 .

It is a super-2 number, since 2×10643650² = 226574570645000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (10643653) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 106387 + ... + 106486.

Almost surely, 2^10643650 is an apocalyptic number.

10643650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10643650 is a deficient number, since it is larger than the sum of its proper divisors (9153632).

10643650 is a wasteful number, since it uses less digits than its factorization.

10643650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212885 (or 212880 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 10643650 is about 3262.4607277330. The cubic root of 10643650 is about 219.9700372417.

The spelling of 10643650 in words is "ten million, six hundred forty-three thousand, six hundred fifty".