64045397 has 4 divisors (see below), whose sum is σ = 68971980. Its totient is φ = 59118816.

The previous prime is 64045393. The next prime is 64045417. The reversal of 64045397 is 79354046.

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

It can be written as a sum of positive squares in 2 ways, for example, as 21613201 + 42432196 = 4649^2 + 6514^2 .

It is a cyclic number.

It is not a de Polignac number, because 64045397 - 2² = 64045393 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64045397.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64045391) 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, 2463272 + ... + 2463297.

It is an arithmetic number, because the mean of its divisors is an integer number (17242995).

Almost surely, 2^64045397 is an apocalyptic number.

It is an amenable number.

64045397 is a deficient number, since it is larger than the sum of its proper divisors (4926583).

64045397 is a wasteful number, since it uses less digits than its factorization.

64045397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4926582.

The product of its (nonzero) digits is 90720, while the sum is 38.

The square root of 64045397 is about 8002.8368095320. The cubic root of 64045397 is about 400.0945547301.

The spelling of 64045397 in words is "sixty-four million, forty-five thousand, three hundred ninety-seven".