64077249 has 4 divisors (see below), whose sum is σ = 85436336. Its totient is φ = 42718164.

The previous prime is 64077197. The next prime is 64077263. The reversal of 64077249 is 94277046.

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.

It is not a de Polignac number, because 64077249 - 2¹⁹ = 63552961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64077289) 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, 10679539 + ... + 10679544.

It is an arithmetic number, because the mean of its divisors is an integer number (21359084).

Almost surely, 2^64077249 is an apocalyptic number.

It is an amenable number.

64077249 is a deficient number, since it is larger than the sum of its proper divisors (21359087).

64077249 is a wasteful number, since it uses less digits than its factorization.

64077249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21359086.

The product of its (nonzero) digits is 84672, while the sum is 39.

The square root of 64077249 is about 8004.8266064919. The cubic root of 64077249 is about 400.1608707095.

The spelling of 64077249 in words is "sixty-four million, seventy-seven thousand, two hundred forty-nine".