10661898 has 16 divisors (see below), whose sum is σ = 22964256. Its totient is φ = 3280560.

The previous prime is 10661897. The next prime is 10661921. The reversal of 10661898 is 89816601.

It is a super-2 number, since 2×10661898² = 227352137924808, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (10661897) 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, 68268 + ... + 68423.

It is an arithmetic number, because the mean of its divisors is an integer number (1435266).

Almost surely, 2^10661898 is an apocalyptic number.

10661898 is an abundant number, since it is smaller than the sum of its proper divisors (12302358).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10661898 is a wasteful number, since it uses less digits than its factorization.

10661898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136709.

The product of its (nonzero) digits is 20736, while the sum is 39.

The square root of 10661898 is about 3265.2561920927. The cubic root of 10661898 is about 220.0956746400.

The spelling of 10661898 in words is "ten million, six hundred sixty-one thousand, eight hundred ninety-eight".