1420665264 has 160 divisors (see below), whose sum is σ = 4353094400. Its totient is φ = 442298880.

The previous prime is 1420665227. The next prime is 1420665269. The reversal of 1420665264 is 4625660241.

It is a super-3 number, since 3×1420665264³ (a number of 28 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1420665269) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 597999 + ... + 600369.

It is an arithmetic number, because the mean of its divisors is an integer number (27206840).

Almost surely, 2^1420665264 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1420665264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2176547200).

1420665264 is an abundant number, since it is smaller than the sum of its proper divisors (2932429136).

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

1420665264 is a wasteful number, since it uses less digits than its factorization.

1420665264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2480 (or 2468 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The square root of 1420665264 is about 37691.7134659596. The cubic root of 1420665264 is about 1124.1663655335.

The spelling of 1420665264 in words is "one billion, four hundred twenty million, six hundred sixty-five thousand, two hundred sixty-four".