64240753 has 4 divisors (see below), whose sum is σ = 65734768. Its totient is φ = 62746740.

The previous prime is 64240751. The next prime is 64240783. The reversal of 64240753 is 35704246.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 35704246 = 2 ⋅17852123.

It is a cyclic number.

It is not a de Polignac number, because 64240753 - 2¹ = 64240751 is a prime.

It is a super-3 number, since 3×64240753³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64240751) 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, 746943 + ... + 747028.

It is an arithmetic number, because the mean of its divisors is an integer number (16433692).

Almost surely, 2^64240753 is an apocalyptic number.

It is an amenable number.

64240753 is a deficient number, since it is larger than the sum of its proper divisors (1494015).

64240753 is a wasteful number, since it uses less digits than its factorization.

64240753 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1494014.

The product of its (nonzero) digits is 20160, while the sum is 31.

The square root of 64240753 is about 8015.0329381731. The cubic root of 64240753 is about 400.5009411331.

Adding to 64240753 its reverse (35704246), we get a palindrome (99944999).

The spelling of 64240753 in words is "sixty-four million, two hundred forty thousand, seven hundred fifty-three".