6464654421 has 8 divisors (see below), whose sum is σ = 8632162080. Its totient is φ = 4303458192.

The previous prime is 6464654419. The next prime is 6464654423. The reversal of 6464654421 is 1244564646.

It is an interprime number because it is at equal distance from previous prime (6464654419) and next prime (6464654423).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6464654421 - 2¹ = 6464654419 is a prime.

It is a super-3 number, since 3×6464654421³ (a number of 30 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6464654423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1575466 + ... + 1579563.

It is an arithmetic number, because the mean of its divisors is an integer number (1079020260).

Almost surely, 2^6464654421 is an apocalyptic number.

It is an amenable number.

6464654421 is a deficient number, since it is larger than the sum of its proper divisors (2167507659).

6464654421 is a wasteful number, since it uses less digits than its factorization.

6464654421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3155715.

The product of its digits is 552960, while the sum is 42.

The square root of 6464654421 is about 80403.0746986706. The cubic root of 6464654421 is about 1862.8666649610.

The spelling of 6464654421 in words is "six billion, four hundred sixty-four million, six hundred fifty-four thousand, four hundred twenty-one".