80977742 has 8 divisors (see below), whose sum is σ = 121742136. Its totient is φ = 40397032.

The previous prime is 80977739. The next prime is 80977759. The reversal of 80977742 is 24777908.

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

It is a junction number, because it is equal to n+sod(n) for n = 80977693 and 80977702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44813 + ... + 46584.

It is an arithmetic number, because the mean of its divisors is an integer number (15217767).

Almost surely, 2^80977742 is an apocalyptic number.

80977742 is a deficient number, since it is larger than the sum of its proper divisors (40764394).

80977742 is a wasteful number, since it uses less digits than its factorization.

80977742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91842.

The product of its (nonzero) digits is 197568, while the sum is 44.

The square root of 80977742 is about 8998.7633594845. The cubic root of 80977742 is about 432.6352358678.

The spelling of 80977742 in words is "eighty million, nine hundred seventy-seven thousand, seven hundred forty-two".