6465554 has 4 divisors (see below), whose sum is σ = 9698334. Its totient is φ = 3232776.

The previous prime is 6465551. The next prime is 6465581. The reversal of 6465554 is 4555646.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4555646 = 2 ⋅2277823.

It can be written as a sum of positive squares in only one way, i.e., 5414929 + 1050625 = 2327^2 + 1025^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6465551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1616387 + ... + 1616390.

Almost surely, 2^6465554 is an apocalyptic number.

6465554 is a deficient number, since it is larger than the sum of its proper divisors (3232780).

6465554 is a wasteful number, since it uses less digits than its factorization.

6465554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3232779.

The product of its digits is 72000, while the sum is 35.

The square root of 6465554 is about 2542.7453667247. The cubic root of 6465554 is about 186.2953069064.

The spelling of 6465554 in words is "six million, four hundred sixty-five thousand, five hundred fifty-four".