72071377 has 8 divisors (see below), whose sum is σ = 82455296. Its totient is φ = 61709472.

The previous prime is 72071371. The next prime is 72071393. The reversal of 72071377 is 77317027.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72071377 is a prime.

It is a super-2 number, since 2×72071377² = 10388566765352258, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (72071371) 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, 2248 + ... + 12214.

It is an arithmetic number, because the mean of its divisors is an integer number (10306912).

Almost surely, 2^72071377 is an apocalyptic number.

It is an amenable number.

72071377 is a deficient number, since it is larger than the sum of its proper divisors (10383919).

72071377 is a wasteful number, since it uses less digits than its factorization.

72071377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11007.

The product of its (nonzero) digits is 14406, while the sum is 34.

The square root of 72071377 is about 8489.4862624307. The cubic root of 72071377 is about 416.1541915624.

The spelling of 72071377 in words is "seventy-two million, seventy-one thousand, three hundred seventy-seven".