66354053 has 4 divisors (see below), whose sum is σ = 67344480. Its totient is φ = 65363628.

The previous prime is 66354019. The next prime is 66354107. The reversal of 66354053 is 35045366.

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, and also an emirpimes, since its reverse is a distinct semiprime: 35045366 = 2 ⋅17522683.

It is a cyclic number.

It is not a de Polignac number, because 66354053 - 2⁸ = 66353797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66324053) 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, 495113 + ... + 495246.

It is an arithmetic number, because the mean of its divisors is an integer number (16836120).

Almost surely, 2^66354053 is an apocalyptic number.

It is an amenable number.

66354053 is a deficient number, since it is larger than the sum of its proper divisors (990427).

66354053 is an equidigital number, since it uses as much as digits as its factorization.

66354053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 990426.

The product of its (nonzero) digits is 32400, while the sum is 32.

The square root of 66354053 is about 8145.7997151906. The cubic root of 66354053 is about 404.8453466316.

The spelling of 66354053 in words is "sixty-six million, three hundred fifty-four thousand, fifty-three".