64702945 has 16 divisors (see below), whose sum is σ = 78851520. Its totient is φ = 50963904.

The previous prime is 64702943. The next prime is 64702987. The reversal of 64702945 is 54920746.

It is a cyclic number.

It is not a de Polignac number, because 64702945 - 2¹ = 64702943 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64702943) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 123454 + ... + 123976.

It is an arithmetic number, because the mean of its divisors is an integer number (4928220).

Almost surely, 2^64702945 is an apocalyptic number.

It is an amenable number.

64702945 is a deficient number, since it is larger than the sum of its proper divisors (14148575).

64702945 is a wasteful number, since it uses less digits than its factorization.

64702945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 864.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 64702945 is about 8043.8140828838. The cubic root of 64702945 is about 401.4591395572.

The spelling of 64702945 in words is "sixty-four million, seven hundred two thousand, nine hundred forty-five".