66698150 has 12 divisors (see below), whose sum is σ = 124058652. Its totient is φ = 26679240.

The previous prime is 66698141. The next prime is 66698167. The reversal of 66698150 is 5189666.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 66698098 and 66698107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 666932 + ... + 667031.

It is an arithmetic number, because the mean of its divisors is an integer number (10338221).

Almost surely, 2^66698150 is an apocalyptic number.

66698150 is a deficient number, since it is larger than the sum of its proper divisors (57360502).

66698150 is a wasteful number, since it uses less digits than its factorization.

66698150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1333975 (or 1333970 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 66698150 is about 8166.8935342638. The cubic root of 66698150 is about 405.5439523240.

The spelling of 66698150 in words is "sixty-six million, six hundred ninety-eight thousand, one hundred fifty".