72061756 has 24 divisors (see below), whose sum is σ = 142958480. Its totient is φ = 31508352.

The previous prime is 72061739. The next prime is 72061757. The reversal of 72061756 is 65716027.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72061757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35481 + ... + 37456.

Almost surely, 2^72061756 is an apocalyptic number.

72061756 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

It is an amenable number.

72061756 is a deficient number, since it is larger than the sum of its proper divisors (70896724).

72061756 is a wasteful number, since it uses less digits than its factorization.

72061756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72973 (or 72971 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 72061756 is about 8488.9196014569. The cubic root of 72061756 is about 416.1356728947.

The spelling of 72061756 in words is "seventy-two million, sixty-one thousand, seven hundred fifty-six".