72842777 has 8 divisors (see below), whose sum is σ = 85934592. Its totient is φ = 60422400.

The previous prime is 72842767. The next prime is 72842813. The reversal of 72842777 is 77724827.

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

It is a cyclic number.

It is not a de Polignac number, because 72842777 - 2⁴ = 72842761 is a prime.

It is a super-2 number, since 2×72842777² = 10612140322143458, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72842747) 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, 167624 + ... + 168057.

It is an arithmetic number, because the mean of its divisors is an integer number (10741824).

Almost surely, 2^72842777 is an apocalyptic number.

It is an amenable number.

72842777 is a deficient number, since it is larger than the sum of its proper divisors (13091815).

72842777 is a wasteful number, since it uses less digits than its factorization.

72842777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335719.

The product of its digits is 307328, while the sum is 44.

The square root of 72842777 is about 8534.7980058113. The cubic root of 72842777 is about 417.6336636819.

The spelling of 72842777 in words is "seventy-two million, eight hundred forty-two thousand, seven hundred seventy-seven".