66053477 has 4 divisors (see below), whose sum is σ = 75489696. Its totient is φ = 56617260.

The previous prime is 66053453. The next prime is 66053479. The reversal of 66053477 is 77435066.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 66053477 - 2¹⁶ = 65987941 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 66053477.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66053479) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4718099 + ... + 4718112.

It is an arithmetic number, because the mean of its divisors is an integer number (18872424).

Almost surely, 2^66053477 is an apocalyptic number.

It is an amenable number.

66053477 is a deficient number, since it is larger than the sum of its proper divisors (9436219).

66053477 is an equidigital number, since it uses as much as digits as its factorization.

66053477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9436218.

The product of its (nonzero) digits is 105840, while the sum is 38.

The square root of 66053477 is about 8127.3290200410. The cubic root of 66053477 is about 404.2331207742.

The spelling of 66053477 in words is "sixty-six million, fifty-three thousand, four hundred seventy-seven".