6464078 has 4 divisors (see below), whose sum is σ = 9696120. Its totient is φ = 3232038.

The previous prime is 6464057. The next prime is 6464083. The reversal of 6464078 is 8704646.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1616018 + ... + 1616021.

It is an arithmetic number, because the mean of its divisors is an integer number (2424030).

Almost surely, 2^6464078 is an apocalyptic number.

6464078 is a deficient number, since it is larger than the sum of its proper divisors (3232042).

6464078 is a wasteful number, since it uses less digits than its factorization.

6464078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3232041.

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 6464078 is about 2542.4551126814. The cubic root of 6464078 is about 186.2811295805.

The spelling of 6464078 in words is "six million, four hundred sixty-four thousand, seventy-eight".