64072427 has 4 divisors (see below), whose sum is σ = 67444680. Its totient is φ = 60700176.

The previous prime is 64072423. The next prime is 64072429. The reversal of 64072427 is 72427046.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 64072427 - 2² = 64072423 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64072393 and 64072402.

It is not an unprimeable number, because it can be changed into a prime (64072423) 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, 1686098 + ... + 1686135.

It is an arithmetic number, because the mean of its divisors is an integer number (16861170).

Almost surely, 2^64072427 is an apocalyptic number.

64072427 is a deficient number, since it is larger than the sum of its proper divisors (3372253).

64072427 is a wasteful number, since it uses less digits than its factorization.

64072427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3372252.

The product of its (nonzero) digits is 18816, while the sum is 32.

The square root of 64072427 is about 8004.5254075429. The cubic root of 64072427 is about 400.1508326999.

The spelling of 64072427 in words is "sixty-four million, seventy-two thousand, four hundred twenty-seven".