84620401 has 4 divisors (see below), whose sum is σ = 84639652. Its totient is φ = 84601152.

The previous prime is 84620387. The next prime is 84620423. The reversal of 84620401 is 10402648.

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

It can be written as a sum of positive squares in 2 ways, for example, as 37834801 + 46785600 = 6151^2 + 6840^2 .

It is a cyclic number.

It is not a de Polignac number, because 84620401 - 2⁹ = 84619889 is a prime.

It is a super-2 number, since 2×84620401² = 14321224530801602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84620491) 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, 565 + ... + 13021.

It is an arithmetic number, because the mean of its divisors is an integer number (21159913).

Almost surely, 2^84620401 is an apocalyptic number.

It is an amenable number.

84620401 is a deficient number, since it is larger than the sum of its proper divisors (19251).

84620401 is a wasteful number, since it uses less digits than its factorization.

84620401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19250.

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 84620401 is about 9198.9347752878. The cubic root of 84620401 is about 439.0274680433.

The spelling of 84620401 in words is "eighty-four million, six hundred twenty thousand, four hundred one".