67620528 has 80 divisors (see below), whose sum is σ = 195528160. Its totient is φ = 22374144.

The previous prime is 67620523. The next prime is 67620541. The reversal of 67620528 is 82502676.

67620528 is a `hidden beast` number, since 6 + 7 + 620 + 5 + 28 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 67620492 and 67620501.

It is not an unprimeable number, because it can be changed into a prime (67620523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67326 + ... + 68322.

It is an arithmetic number, because the mean of its divisors is an integer number (2444102).

Almost surely, 2^67620528 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 67620528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97764080).

67620528 is an abundant number, since it is smaller than the sum of its proper divisors (127907632).

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

67620528 is a wasteful number, since it uses less digits than its factorization.

67620528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1171 (or 1159 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 67620528 is about 8223.1701915989. The cubic root of 67620528 is about 407.4048415943.

The spelling of 67620528 in words is "sixty-seven million, six hundred twenty thousand, five hundred twenty-eight".