67620944 has 10 divisors (see below), whose sum is σ = 131015610. Its totient is φ = 33810464.

The previous prime is 67620937. The next prime is 67620947. The reversal of 67620944 is 44902676.

It can be written as a sum of positive squares in only one way, i.e., 67043344 + 577600 = 8188^2 + 760^2 .

It is a super-2 number, since 2×67620944² = 9145184134902272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 67620898 and 67620907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67620947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2113139 + ... + 2113170.

It is an arithmetic number, because the mean of its divisors is an integer number (13101561).

Almost surely, 2^67620944 is an apocalyptic number.

It is an amenable number.

67620944 is a deficient number, since it is larger than the sum of its proper divisors (63394666).

67620944 is a wasteful number, since it uses less digits than its factorization.

67620944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4226317 (or 4226311 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 38.

The square root of 67620944 is about 8223.1954859410. The cubic root of 67620944 is about 407.4056770411.

The spelling of 67620944 in words is "sixty-seven million, six hundred twenty thousand, nine hundred forty-four".