420672623 has 4 divisors (see below), whose sum is σ = 480768720. Its totient is φ = 360576528.

The previous prime is 420672619. The next prime is 420672661. The reversal of 420672623 is 326276024.

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

It is a cyclic number.

It is not a de Polignac number, because 420672623 - 2² = 420672619 is a prime.

It is a super-3 number, since 3×420672623³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 420672623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420672023) 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, 30048038 + ... + 30048051.

It is an arithmetic number, because the mean of its divisors is an integer number (120192180).

Almost surely, 2^420672623 is an apocalyptic number.

420672623 is a deficient number, since it is larger than the sum of its proper divisors (60096097).

420672623 is an equidigital number, since it uses as much as digits as its factorization.

420672623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60096096.

The product of its (nonzero) digits is 24192, while the sum is 32.

The square root of 420672623 is about 20510.3052878303. The cubic root of 420672623 is about 749.2868023100.

The spelling of 420672623 in words is "four hundred twenty million, six hundred seventy-two thousand, six hundred twenty-three".