420795651 has 4 divisors (see below), whose sum is σ = 561060872. Its totient is φ = 280530432.

The previous prime is 420795647. The next prime is 420795659. The reversal of 420795651 is 156597024.

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

It is not a de Polignac number, because 420795651 - 2² = 420795647 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420795659) 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, 70132606 + ... + 70132611.

It is an arithmetic number, because the mean of its divisors is an integer number (140265218).

Almost surely, 2^420795651 is an apocalyptic number.

420795651 is a deficient number, since it is larger than the sum of its proper divisors (140265221).

420795651 is a wasteful number, since it uses less digits than its factorization.

420795651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140265220.

The product of its (nonzero) digits is 75600, while the sum is 39.

The square root of 420795651 is about 20513.3042438316. The cubic root of 420795651 is about 749.3598395260.

The spelling of 420795651 in words is "four hundred twenty million, seven hundred ninety-five thousand, six hundred fifty-one".