64402698907 has 4 divisors (see below), whose sum is σ = 64403240616. Its totient is φ = 64402157200.

The previous prime is 64402698847. The next prime is 64402698961. The reversal of 64402698907 is 70989620446.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 70989620446 = 2 ⋅35494810223.

It is a cyclic number.

It is not a de Polignac number, because 64402698907 - 2¹¹ = 64402696859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64402698007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6553 + ... + 358954.

It is an arithmetic number, because the mean of its divisors is an integer number (16100810154).

Almost surely, 2^64402698907 is an apocalyptic number.

64402698907 is a deficient number, since it is larger than the sum of its proper divisors (541709).

64402698907 is a wasteful number, since it uses less digits than its factorization.

64402698907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541708.

The product of its (nonzero) digits is 5225472, while the sum is 55.

The spelling of 64402698907 in words is "sixty-four billion, four hundred two million, six hundred ninety-eight thousand, nine hundred seven".