420690651 has 8 divisors (see below), whose sum is σ = 561314304. Its totient is φ = 280263720.

The previous prime is 420690643. The next prime is 420690659. The reversal of 420690651 is 156096024.

It is an interprime number because it is at equal distance from previous prime (420690643) and next prime (420690659).

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

It is not a de Polignac number, because 420690651 - 2³ = 420690643 is a prime.

It is not an unprimeable number, because it can be changed into a prime (420690659) 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, 44115 + ... + 52796.

It is an arithmetic number, because the mean of its divisors is an integer number (70164288).

Almost surely, 2^420690651 is an apocalyptic number.

420690651 is a deficient number, since it is larger than the sum of its proper divisors (140623653).

420690651 is a wasteful number, since it uses less digits than its factorization.

420690651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98361.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 420690651 is about 20510.7447695104. The cubic root of 420690651 is about 749.2975057635.

The spelling of 420690651 in words is "four hundred twenty million, six hundred ninety thousand, six hundred fifty-one".