64799247 has 8 divisors (see below), whose sum is σ = 88734256. Its totient is φ = 42031872.

The previous prime is 64799243. The next prime is 64799249. The reversal of 64799247 is 74299746.

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

It is not a de Polignac number, because 64799247 - 2² = 64799243 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64799196 and 64799205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64799243) 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, 291778 + ... + 291999.

It is an arithmetic number, because the mean of its divisors is an integer number (11091782).

Almost surely, 2^64799247 is an apocalyptic number.

64799247 is a deficient number, since it is larger than the sum of its proper divisors (23935009).

64799247 is a wasteful number, since it uses less digits than its factorization.

64799247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 583817.

The product of its digits is 762048, while the sum is 48.

The square root of 64799247 is about 8049.7979477748. The cubic root of 64799247 is about 401.6582142315.

The spelling of 64799247 in words is "sixty-four million, seven hundred ninety-nine thousand, two hundred forty-seven".