66361703 has 4 divisors (see below), whose sum is σ = 66558960. Its totient is φ = 66164448.

The previous prime is 66361663. The next prime is 66361709. The reversal of 66361703 is 30716366.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30716366 = 2 ⋅15358183.

It is a cyclic number.

It is not a de Polignac number, because 66361703 - 2¹² = 66357607 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 66361703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66361709) 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, 98123 + ... + 98796.

It is an arithmetic number, because the mean of its divisors is an integer number (16639740).

Almost surely, 2^66361703 is an apocalyptic number.

66361703 is a deficient number, since it is larger than the sum of its proper divisors (197257).

66361703 is a wasteful number, since it uses less digits than its factorization.

66361703 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197256.

The product of its (nonzero) digits is 13608, while the sum is 32.

The square root of 66361703 is about 8146.2692688126. The cubic root of 66361703 is about 404.8609043242.

The spelling of 66361703 in words is "sixty-six million, three hundred sixty-one thousand, seven hundred three".