67771625 has 16 divisors (see below), whose sum is σ = 84834048. Its totient is φ = 54054000.

The previous prime is 67771621. The next prime is 67771657. The reversal of 67771625 is 52617776.

It is not a de Polignac number, because 67771625 - 2² = 67771621 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67771621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57290 + ... + 58460.

It is an arithmetic number, because the mean of its divisors is an integer number (5302128).

Almost surely, 2^67771625 is an apocalyptic number.

It is an amenable number.

67771625 is a deficient number, since it is larger than the sum of its proper divisors (17062423).

67771625 is a wasteful number, since it uses less digits than its factorization.

67771625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1649 (or 1639 counting only the distinct ones).

The product of its digits is 123480, while the sum is 41.

The square root of 67771625 is about 8232.3523369691. The cubic root of 67771625 is about 407.7080624166.

The spelling of 67771625 in words is "sixty-seven million, seven hundred seventy-one thousand, six hundred twenty-five".