66320463 has 12 divisors (see below), whose sum is σ = 97197464. Its totient is φ = 40194000.

The previous prime is 66320459. The next prime is 66320489. The reversal of 66320463 is 36402366.

66320463 = T₃₄₆₇ + T₃₄₆₈ + ... + T₃₄₇₇.

It is not a de Polignac number, because 66320463 - 2² = 66320459 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 66320463.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66320413) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 90988 + ... + 91713.

Almost surely, 2^66320463 is an apocalyptic number.

66320463 is a deficient number, since it is larger than the sum of its proper divisors (30877001).

66320463 is a wasteful number, since it uses less digits than its factorization.

66320463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182726 (or 182715 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 30.

The square root of 66320463 is about 8143.7376554012. The cubic root of 66320463 is about 404.7770209861. Note that the first 3 decimals are identical.

The spelling of 66320463 in words is "sixty-six million, three hundred twenty thousand, four hundred sixty-three".