64145707 has 4 divisors (see below), whose sum is σ = 64272240. Its totient is φ = 64019176.

The previous prime is 64145699. The next prime is 64145717. The reversal of 64145707 is 70754146.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70754146 = 2 ⋅35377073.

It is a cyclic number.

It is not a de Polignac number, because 64145707 - 2³ = 64145699 is a prime.

It is a super-2 number, since 2×64145707² = 8229343453059698, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64145717) 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, 62503 + ... + 63520.

It is an arithmetic number, because the mean of its divisors is an integer number (16068060).

Almost surely, 2^64145707 is an apocalyptic number.

64145707 is a deficient number, since it is larger than the sum of its proper divisors (126533).

64145707 is a wasteful number, since it uses less digits than its factorization.

64145707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126532.

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 64145707 is about 8009.1015101571. The cubic root of 64145707 is about 400.3033261749.

It can be divided in two parts, 6414 and 5707, that added together give a palindrome (12121).

The spelling of 64145707 in words is "sixty-four million, one hundred forty-five thousand, seven hundred seven".