66501054 has 32 divisors (see below), whose sum is σ = 148055040. Its totient is φ = 22125816.

The previous prime is 66501049. The next prime is 66501077. The reversal of 66501054 is 45010566.

It is a happy number.

66501054 is a `hidden beast` number, since 6 + 650 + 1 + 0 + 5 + 4 = 666.

It is a super-2 number, since 2×66501054² = 8844780366221832, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45889 + ... + 47315.

It is an arithmetic number, because the mean of its divisors is an integer number (4626720).

Almost surely, 2^66501054 is an apocalyptic number.

66501054 is an abundant number, since it is smaller than the sum of its proper divisors (81553986).

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

66501054 is a wasteful number, since it uses less digits than its factorization.

66501054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2301 (or 2295 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 66501054 is about 8154.8178397804. The cubic root of 66501054 is about 405.1440913901.

The spelling of 66501054 in words is "sixty-six million, five hundred one thousand, fifty-four".