64427973 has 8 divisors (see below), whose sum is σ = 85941408. Its totient is φ = 42933264.

The previous prime is 64427971. The next prime is 64427983. The reversal of 64427973 is 37972446.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 64427973 - 2¹ = 64427971 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64427971) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9415 + ... + 14747.

It is an arithmetic number, because the mean of its divisors is an integer number (10742676).

Almost surely, 2^64427973 is an apocalyptic number.

It is an amenable number.

64427973 is a deficient number, since it is larger than the sum of its proper divisors (21513435).

64427973 is a wasteful number, since it uses less digits than its factorization.

64427973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9363.

The product of its digits is 254016, while the sum is 42.

The square root of 64427973 is about 8026.7037443773. The cubic root of 64427973 is about 400.8896303444.

The spelling of 64427973 in words is "sixty-four million, four hundred twenty-seven thousand, nine hundred seventy-three".