67621416 has 64 divisors (see below), whose sum is σ = 176494080. Its totient is φ = 21565440.

The previous prime is 67621397. The next prime is 67621429. The reversal of 67621416 is 61412676.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71700 + ... + 72636.

It is an arithmetic number, because the mean of its divisors is an integer number (2757720).

Almost surely, 2^67621416 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67621416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88247040).

67621416 is an abundant number, since it is smaller than the sum of its proper divisors (108872664).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

67621416 is a wasteful number, since it uses less digits than its factorization.

67621416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1074 (or 1070 counting only the distinct ones).

The product of its digits is 12096, while the sum is 33.

The square root of 67621416 is about 8223.2241851965. The cubic root of 67621416 is about 407.4066249478.

The spelling of 67621416 in words is "sixty-seven million, six hundred twenty-one thousand, four hundred sixteen".