64449701 has 4 divisors (see below), whose sum is σ = 65265600. Its totient is φ = 63633804.

The previous prime is 64449683. The next prime is 64449719. The reversal of 64449701 is 10794446.

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 an interprime number because it is at equal distance from previous prime (64449683) and next prime (64449719).

It is a cyclic number.

It is not a de Polignac number, because 64449701 - 2²² = 60255397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64449731) 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, 407831 + ... + 407988.

It is an arithmetic number, because the mean of its divisors is an integer number (16316400).

Almost surely, 2^64449701 is an apocalyptic number.

It is an amenable number.

64449701 is a deficient number, since it is larger than the sum of its proper divisors (815899).

64449701 is an equidigital number, since it uses as much as digits as its factorization.

64449701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 815898.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 64449701 is about 8028.0571124027. The cubic root of 64449701 is about 400.9346912627.

The spelling of 64449701 in words is "sixty-four million, four hundred forty-nine thousand, seven hundred one".