64460945 has 4 divisors (see below), whose sum is σ = 77353140. Its totient is φ = 51568752.

The previous prime is 64460941. The next prime is 64460987. The reversal of 64460945 is 54906446.

It is a happy number.

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 25573249 + 38887696 = 5057^2 + 6236^2 .

It is a cyclic number.

It is not a de Polignac number, because 64460945 - 2² = 64460941 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64460899 and 64460908.

It is not an unprimeable number, because it can be changed into a prime (64460941) 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, 6446090 + ... + 6446099.

It is an arithmetic number, because the mean of its divisors is an integer number (19338285).

Almost surely, 2^64460945 is an apocalyptic number.

It is an amenable number.

64460945 is a deficient number, since it is larger than the sum of its proper divisors (12892195).

64460945 is a wasteful number, since it uses less digits than its factorization.

64460945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12892194.

The product of its (nonzero) digits is 103680, while the sum is 38.

The square root of 64460945 is about 8028.7573758334. The cubic root of 64460945 is about 400.9580058137.

The spelling of 64460945 in words is "sixty-four million, four hundred sixty thousand, nine hundred forty-five".