64621301 has 4 divisors (see below), whose sum is σ = 68422572. Its totient is φ = 60820032.

The previous prime is 64621253. The next prime is 64621307. The reversal of 64621301 is 10312646.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 56640676 + 7980625 = 7526^2 + 2825^2 .

It is a cyclic number.

It is not a de Polignac number, because 64621301 - 2¹⁰ = 64620277 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 (64621307) 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, 1900610 + ... + 1900643.

It is an arithmetic number, because the mean of its divisors is an integer number (17105643).

Almost surely, 2^64621301 is an apocalyptic number.

It is an amenable number.

64621301 is a deficient number, since it is larger than the sum of its proper divisors (3801271).

64621301 is a wasteful number, since it uses less digits than its factorization.

64621301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3801270.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 64621301 is about 8038.7375252586. The cubic root of 64621301 is about 401.2902109978.

Adding to 64621301 its reverse (10312646), we get a palindrome (74933947).

The spelling of 64621301 in words is "sixty-four million, six hundred twenty-one thousand, three hundred one".