66526450 has 12 divisors (see below), whose sum is σ = 123739290. Its totient is φ = 26610560.

The previous prime is 66526441. The next prime is 66526459. The reversal of 66526450 is 5462566.

It is an interprime number because it is at equal distance from previous prime (66526441) and next prime (66526459).

It can be written as a sum of positive squares in 3 ways, for example, as 42994249 + 23532201 = 6557^2 + 4851^2 .

It is not an unprimeable number, because it can be changed into a prime (66526459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 665215 + ... + 665314.

Almost surely, 2^66526450 is an apocalyptic number.

66526450 is a deficient number, since it is larger than the sum of its proper divisors (57212840).

66526450 is a wasteful number, since it uses less digits than its factorization.

66526450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1330541 (or 1330536 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 34.

The square root of 66526450 is about 8156.3748074742. The cubic root of 66526450 is about 405.1956581410.

The spelling of 66526450 in words is "sixty-six million, five hundred twenty-six thousand, four hundred fifty".