64072673 has 4 divisors (see below), whose sum is σ = 73225920. Its totient is φ = 54919428.

The previous prime is 64072667. The next prime is 64072681. The reversal of 64072673 is 37627046.

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.

It is a cyclic number.

It is not a de Polignac number, because 64072673 - 2⁸ = 64072417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64072633) 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, 4576613 + ... + 4576626.

It is an arithmetic number, because the mean of its divisors is an integer number (18306480).

Almost surely, 2^64072673 is an apocalyptic number.

It is an amenable number.

64072673 is a deficient number, since it is larger than the sum of its proper divisors (9153247).

64072673 is an equidigital number, since it uses as much as digits as its factorization.

64072673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9153246.

The product of its (nonzero) digits is 42336, while the sum is 35.

The square root of 64072673 is about 8004.5407738358. The cubic root of 64072673 is about 400.1513448130.

The spelling of 64072673 in words is "sixty-four million, seventy-two thousand, six hundred seventy-three".