64695423 has 8 divisors (see below), whose sum is σ = 92896048. Its totient is φ = 39812544.

The previous prime is 64695347. The next prime is 64695439. The reversal of 64695423 is 32459646.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-64695423 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 1658857 = 64695423 / (6 + 4 + 6 + 9 + 5 + 4 + 2 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64695493) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 829390 + ... + 829467.

It is an arithmetic number, because the mean of its divisors is an integer number (11612006).

Almost surely, 2^64695423 is an apocalyptic number.

64695423 is a deficient number, since it is larger than the sum of its proper divisors (28200625).

64695423 is a wasteful number, since it uses less digits than its factorization.

64695423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1658873.

The product of its digits is 155520, while the sum is 39.

The square root of 64695423 is about 8043.3465050313. The cubic root of 64695423 is about 401.4435818281.

It can be divided in two parts, 646 and 95423, that added together give a palindrome (96069).

The spelling of 64695423 in words is "sixty-four million, six hundred ninety-five thousand, four hundred twenty-three".