1420404664 has 32 divisors (see below), whose sum is σ = 3101159520. Its totient is φ = 597257856.

The previous prime is 1420404653. The next prime is 1420404673. The reversal of 1420404664 is 4664040241.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 236319 + ... + 242254.

It is an arithmetic number, because the mean of its divisors is an integer number (96911235).

Almost surely, 2^1420404664 is an apocalyptic number.

1420404664 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1420404664 is an abundant number, since it is smaller than the sum of its proper divisors (1680754856).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1420404664 is a wasteful number, since it uses less digits than its factorization.

1420404664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478639 (or 478635 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 31.

The square root of 1420404664 is about 37688.2563141358. The cubic root of 1420404664 is about 1124.0976241072.

The spelling of 1420404664 in words is "one billion, four hundred twenty million, four hundred four thousand, six hundred sixty-four".