420200691 has 32 divisors (see below), whose sum is σ = 601344000. Its totient is φ = 260413440.

The previous prime is 420200657. The next prime is 420200699. The reversal of 420200691 is 196002024.

It is not a de Polignac number, because 420200691 - 2⁷ = 420200563 is a prime.

It is not an unprimeable number, because it can be changed into a prime (420200699) 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, 935635 + ... + 936083.

It is an arithmetic number, because the mean of its divisors is an integer number (18792000).

Almost surely, 2^420200691 is an apocalyptic number.

420200691 is a deficient number, since it is larger than the sum of its proper divisors (181143309).

420200691 is a wasteful number, since it uses less digits than its factorization.

420200691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 859.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 420200691 is about 20498.7973061836. The cubic root of 420200691 is about 749.0065014174.

The spelling of 420200691 in words is "four hundred twenty million, two hundred thousand, six hundred ninety-one".