90511966 has 16 divisors (see below), whose sum is σ = 137109600. Its totient is φ = 44811360.

The previous prime is 90511963. The next prime is 90511979. The reversal of 90511966 is 66911509.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90511963) 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, 109836 + ... + 110656.

It is an arithmetic number, because the mean of its divisors is an integer number (8569350).

Almost surely, 2^90511966 is an apocalyptic number.

90511966 is a deficient number, since it is larger than the sum of its proper divisors (46597634).

90511966 is a wasteful number, since it uses less digits than its factorization.

90511966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1299.

The product of its (nonzero) digits is 14580, while the sum is 37.

The square root of 90511966 is about 9513.7776934297. Note that the first 3 decimals coincide. The cubic root of 90511966 is about 448.9886191463.

It can be divided in two parts, 905119 and 66, that added together give a triangular number (905185 = T₁₃₄₅).

The spelling of 90511966 in words is "ninety million, five hundred eleven thousand, nine hundred sixty-six".