64651541 has 4 divisors (see below), whose sum is σ = 65116800. Its totient is φ = 64186284.

The previous prime is 64651529. The next prime is 64651553. The reversal of 64651541 is 14515646.

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, and also an emirpimes, since its reverse is a distinct semiprime: 14515646 = 2 ⋅7257823.

It is an interprime number because it is at equal distance from previous prime (64651529) and next prime (64651553).

It is a cyclic number.

It is not a de Polignac number, because 64651541 - 2¹⁰ = 64650517 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64651498 and 64651507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64651511) 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, 232421 + ... + 232698.

It is an arithmetic number, because the mean of its divisors is an integer number (16279200).

Almost surely, 2^64651541 is an apocalyptic number.

It is an amenable number.

64651541 is a deficient number, since it is larger than the sum of its proper divisors (465259).

64651541 is a wasteful number, since it uses less digits than its factorization.

64651541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465258.

The product of its digits is 14400, while the sum is 32.

The square root of 64651541 is about 8040.6181976263. The cubic root of 64651541 is about 401.3527967778.

The spelling of 64651541 in words is "sixty-four million, six hundred fifty-one thousand, five hundred forty-one".