420707623 has 8 divisors (see below), whose sum is σ = 481007648. Its totient is φ = 360457344.

The previous prime is 420707621. The next prime is 420707659. The reversal of 420707623 is 326707024.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 420707623 - 2¹ = 420707621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420707621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7915 + ... + 30067.

It is an arithmetic number, because the mean of its divisors is an integer number (60125956).

Almost surely, 2^420707623 is an apocalyptic number.

420707623 is a deficient number, since it is larger than the sum of its proper divisors (60300025).

420707623 is a wasteful number, since it uses less digits than its factorization.

420707623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24873.

The product of its (nonzero) digits is 14112, while the sum is 31.

The square root of 420707623 is about 20511.1584997045. The cubic root of 420707623 is about 749.3075819768.

The spelling of 420707623 in words is "four hundred twenty million, seven hundred seven thousand, six hundred twenty-three".