77748946 has 8 divisors (see below), whose sum is σ = 127225584. Its totient is φ = 35340420.

The previous prime is 77748943. The next prime is 77748959. The reversal of 77748946 is 64984777.

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

It is a super-2 number, since 2×77748946² = 12089797208221832, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 77748893 and 77748902.

It is not an unprimeable number, because it can be changed into a prime (77748943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1767000 + ... + 1767043.

It is an arithmetic number, because the mean of its divisors is an integer number (15903198).

Almost surely, 2^77748946 is an apocalyptic number.

77748946 is a deficient number, since it is larger than the sum of its proper divisors (49476638).

77748946 is a wasteful number, since it uses less digits than its factorization.

77748946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3534056.

The product of its digits is 2370816, while the sum is 52.

The square root of 77748946 is about 8817.5362772149. The cubic root of 77748946 is about 426.8069703239.

The spelling of 77748946 in words is "seventy-seven million, seven hundred forty-eight thousand, nine hundred forty-six".