84674621 has 4 divisors (see below), whose sum is σ = 89131200. Its totient is φ = 80218044.

The previous prime is 84674587. The next prime is 84674633. The reversal of 84674621 is 12647648.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 84674621 - 2¹⁸ = 84412477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84674641) 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, 2228261 + ... + 2228298.

It is an arithmetic number, because the mean of its divisors is an integer number (22282800).

Almost surely, 2^84674621 is an apocalyptic number.

It is an amenable number.

84674621 is a deficient number, since it is larger than the sum of its proper divisors (4456579).

84674621 is a wasteful number, since it uses less digits than its factorization.

84674621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4456578.

The product of its digits is 64512, while the sum is 38.

The square root of 84674621 is about 9201.8813837171. The cubic root of 84674621 is about 439.1212160707.

It can be divided in two parts, 846746 and 21, that multiplied together give a triangular number (17781666 = T₅₉₆₃).

The spelling of 84674621 in words is "eighty-four million, six hundred seventy-four thousand, six hundred twenty-one".