6401602601 has 4 divisors (see below), whose sum is σ = 6510104400. Its totient is φ = 6293100804.

The previous prime is 6401602573. The next prime is 6401602631. The reversal of 6401602601 is 1062061046.

It is a happy number.

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: 1062061046 = 2 ⋅531030523.

It is a cyclic number.

It is not a de Polignac number, because 6401602601 - 2¹⁸ = 6401340457 is a prime.

It is a super-2 number, since 2×6401602601² = 81961031722259930402, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6401602631) 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, 54250811 + ... + 54250928.

It is an arithmetic number, because the mean of its divisors is an integer number (1627526100).

Almost surely, 2^6401602601 is an apocalyptic number.

It is an amenable number.

6401602601 is a deficient number, since it is larger than the sum of its proper divisors (108501799).

6401602601 is a wasteful number, since it uses less digits than its factorization.

6401602601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108501798.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 6401602601 is about 80010.0156292948. The cubic root of 6401602601 is about 1856.7904916555.

Adding to 6401602601 its reverse (1062061046), we get a palindrome (7463663647).

The spelling of 6401602601 in words is "six billion, four hundred one million, six hundred two thousand, six hundred one".