1055664478 has 8 divisors (see below), whose sum is σ = 1727451000. Its totient is φ = 479847480.

The previous prime is 1055664457. The next prime is 1055664479. The reversal of 1055664478 is 8744665501.

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

It is a super-2 number, since 2×1055664478² = 2228854980222024968, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1055664479) 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, 23992353 + ... + 23992396.

It is an arithmetic number, because the mean of its divisors is an integer number (215931375).

Almost surely, 2^1055664478 is an apocalyptic number.

1055664478 is a deficient number, since it is larger than the sum of its proper divisors (671786522).

1055664478 is a wasteful number, since it uses less digits than its factorization.

1055664478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47984762.

The product of its (nonzero) digits is 806400, while the sum is 46.

The square root of 1055664478 is about 32490.9907205059. The cubic root of 1055664478 is about 1018.2208116004.

The spelling of 1055664478 in words is "one billion, fifty-five million, six hundred sixty-four thousand, four hundred seventy-eight".