8621416 has 8 divisors (see below), whose sum is σ = 16165170. Its totient is φ = 4310704.

The previous prime is 8621413. The next prime is 8621429. The reversal of 8621416 is 6141268.

It can be written as a sum of positive squares in only one way, i.e., 8145316 + 476100 = 2854^2 + 690^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (8621411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 538831 + ... + 538846.

Almost surely, 2^8621416 is an apocalyptic number.

It is an amenable number.

8621416 is a deficient number, since it is larger than the sum of its proper divisors (7543754).

8621416 is a wasteful number, since it uses less digits than its factorization.

8621416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1077683 (or 1077679 counting only the distinct ones).

The product of its digits is 2304, while the sum is 28.

The square root of 8621416 is about 2936.2247870352. The cubic root of 8621416 is about 205.0498867288.

It can be divided in two parts, 862 and 1416, that added together give a triangular number (2278 = T₆₇).

The spelling of 8621416 in words is "eight million, six hundred twenty-one thousand, four hundred sixteen".