64769755 has 4 divisors (see below), whose sum is σ = 77723712. Its totient is φ = 51815800.

The previous prime is 64769753. The next prime is 64769767. The reversal of 64769755 is 55796746.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55796746 = 2 ⋅27898373.

It is not a de Polignac number, because 64769755 - 2¹ = 64769753 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64769699 and 64769708.

It is not an unprimeable number, because it can be changed into a prime (64769753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6476971 + ... + 6476980.

It is an arithmetic number, because the mean of its divisors is an integer number (19430928).

Almost surely, 2^64769755 is an apocalyptic number.

64769755 is a deficient number, since it is larger than the sum of its proper divisors (12953957).

64769755 is a wasteful number, since it uses less digits than its factorization.

64769755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12953956.

The product of its digits is 1587600, while the sum is 49.

The square root of 64769755 is about 8047.9658920748. The cubic root of 64769755 is about 401.5972695850.

The spelling of 64769755 in words is "sixty-four million, seven hundred sixty-nine thousand, seven hundred fifty-five".