64523673 has 12 divisors (see below), whose sum is σ = 93270528. Its totient is φ = 42983640.

The previous prime is 64523647. The next prime is 64523699. The reversal of 64523673 is 37632546.

64523673 is a `hidden beast` number, since 64 + 523 + 6 + 73 = 666.

It is an interprime number because it is at equal distance from previous prime (64523647) and next prime (64523699).

It is not a de Polignac number, because 64523673 - 2¹⁰ = 64522649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64523633) 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, 21936 + ... + 24702.

It is an arithmetic number, because the mean of its divisors is an integer number (7772544).

Almost surely, 2^64523673 is an apocalyptic number.

It is an amenable number.

64523673 is a deficient number, since it is larger than the sum of its proper divisors (28746855).

64523673 is a wasteful number, since it uses less digits than its factorization.

64523673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5364 (or 5361 counting only the distinct ones).

The product of its digits is 90720, while the sum is 36.

The square root of 64523673 is about 8032.6628835026. The cubic root of 64523673 is about 401.0880232469.

The spelling of 64523673 in words is "sixty-four million, five hundred twenty-three thousand, six hundred seventy-three".