64417641 has 16 divisors (see below), whose sum is σ = 94898304. Its totient is φ = 38660864.

The previous prime is 64417637. The next prime is 64417643. The reversal of 64417641 is 14671446.

It is a cyclic number.

It is not a de Polignac number, because 64417641 - 2² = 64417637 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (64417643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26286 + ... + 28631.

It is an arithmetic number, because the mean of its divisors is an integer number (5931144).

Almost surely, 2^64417641 is an apocalyptic number.

It is an amenable number.

64417641 is a deficient number, since it is larger than the sum of its proper divisors (30480663).

64417641 is a wasteful number, since it uses less digits than its factorization.

64417641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54960.

The product of its digits is 16128, while the sum is 33.

The square root of 64417641 is about 8026.0601168942. The cubic root of 64417641 is about 400.8681996268.

The spelling of 64417641 in words is "sixty-four million, four hundred seventeen thousand, six hundred forty-one".