64380273 has 24 divisors (see below), whose sum is σ = 89894304. Its totient is φ = 40979520.

The previous prime is 64380257. The next prime is 64380287. The reversal of 64380273 is 37208346.

It is not a de Polignac number, because 64380273 - 2⁴ = 64380257 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64380223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 394890 + ... + 395052.

It is an arithmetic number, because the mean of its divisors is an integer number (3745596).

Almost surely, 2^64380273 is an apocalyptic number.

It is an amenable number.

64380273 is a deficient number, since it is larger than the sum of its proper divisors (25514031).

64380273 is a wasteful number, since it uses less digits than its factorization.

64380273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365 (or 334 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 64380273 is about 8023.7318624191. The cubic root of 64380273 is about 400.7906714834.

The spelling of 64380273 in words is "sixty-four million, three hundred eighty thousand, two hundred seventy-three".