64601541 has 12 divisors (see below), whose sum is σ = 95074668. Its totient is φ = 42254784.

The previous prime is 64601521. The next prime is 64601557. The reversal of 64601541 is 14510646.

64601541 is a `hidden beast` number, since 6 + 4 + 601 + 54 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 59444100 + 5157441 = 7710^2 + 2271^2 .

It is not a de Polignac number, because 64601541 - 2⁶ = 64601477 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64601521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67240 + ... + 68193.

It is an arithmetic number, because the mean of its divisors is an integer number (7922889).

Almost surely, 2^64601541 is an apocalyptic number.

It is an amenable number.

64601541 is a deficient number, since it is larger than the sum of its proper divisors (30473127).

64601541 is a wasteful number, since it uses less digits than its factorization.

64601541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135492 (or 135489 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 64601541 is about 8037.5083825773. The cubic root of 64601541 is about 401.2493044504.

Subtracting from 64601541 its product of nonzero digits (2880), we obtain a triangular number (64598661 = T₁₁₃₆₆).

It can be divided in two parts, 6460 and 1541, that added together give a triangular number (8001 = T₁₂₆).

The spelling of 64601541 in words is "sixty-four million, six hundred one thousand, five hundred forty-one".