66354077 has 8 divisors (see below), whose sum is σ = 70903800. Its totient is φ = 61876224.

The previous prime is 66354019. The next prime is 66354107. The reversal of 66354077 is 77045366.

It can be written as a sum of positive squares in 4 ways, for example, as 23921881 + 42432196 = 4891^2 + 6514^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66354077 - 2⁸ = 66353821 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 66354077.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66354377) 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, 16052 + ... + 19757.

It is an arithmetic number, because the mean of its divisors is an integer number (8862975).

Almost surely, 2^66354077 is an apocalyptic number.

It is an amenable number.

66354077 is a deficient number, since it is larger than the sum of its proper divisors (4549723).

66354077 is a wasteful number, since it uses less digits than its factorization.

66354077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35935.

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

The square root of 66354077 is about 8145.8011883424. The cubic root of 66354077 is about 404.8453954419.

The spelling of 66354077 in words is "sixty-six million, three hundred fifty-four thousand, seventy-seven".