67773745 has 16 divisors (see below), whose sum is σ = 89025552. Its totient is φ = 49224960.

The previous prime is 67773721. The next prime is 67773773. The reversal of 67773745 is 54737776.

It can be written as a sum of positive squares in 8 ways, for example, as 18113536 + 49660209 = 4256^2 + 7047^2 .

It is not a de Polignac number, because 67773745 - 2¹⁵ = 67740977 is a prime.

It is a super-2 number, since 2×67773745² = 9186561022650050, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 67773695 and 67773704.

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, 4582 + ... + 12511.

It is an arithmetic number, because the mean of its divisors is an integer number (5564097).

Almost surely, 2^67773745 is an apocalyptic number.

67773745 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

67773745 is a deficient number, since it is larger than the sum of its proper divisors (21251807).

67773745 is a wasteful number, since it uses less digits than its factorization.

67773745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17172.

The product of its digits is 864360, while the sum is 46.

The square root of 67773745 is about 8232.4810962431. The cubic root of 67773745 is about 407.7123136160.

The spelling of 67773745 in words is "sixty-seven million, seven hundred seventy-three thousand, seven hundred forty-five".