67776742 has 16 divisors (see below), whose sum is σ = 112472064. Its totient is φ = 30373000.

The previous prime is 67776719. The next prime is 67776749. The reversal of 67776742 is 24767776.

It is a super-2 number, since 2×67776742² = 9187373512269128, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 67776692 and 67776701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67776749) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20134 + ... + 23257.

It is an arithmetic number, because the mean of its divisors is an integer number (7029504).

Almost surely, 2^67776742 is an apocalyptic number.

67776742 is a deficient number, since it is larger than the sum of its proper divisors (44695322).

67776742 is a wasteful number, since it uses less digits than its factorization.

67776742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43475.

The product of its digits is 691488, while the sum is 46.

The square root of 67776742 is about 8232.6631171207. The cubic root of 67776742 is about 407.7183232972.

The spelling of 67776742 in words is "sixty-seven million, seven hundred seventy-six thousand, seven hundred forty-two".