77401105 has 8 divisors (see below), whose sum is σ = 93117672. Its totient is φ = 61763328.

The previous prime is 77401091. The next prime is 77401109. The reversal of 77401105 is 50110477.

It can be written as a sum of positive squares in 4 ways, for example, as 6235009 + 71166096 = 2497^2 + 8436^2 .

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 77401105 - 2⁷ = 77400977 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 77401105.

It is not an unprimeable number, because it can be changed into a prime (77401109) 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, 17512 + ... + 21481.

It is an arithmetic number, because the mean of its divisors is an integer number (11639709).

Almost surely, 2^77401105 is an apocalyptic number.

It is an amenable number.

77401105 is a deficient number, since it is larger than the sum of its proper divisors (15716567).

77401105 is a wasteful number, since it uses less digits than its factorization.

77401105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39395.

The product of its (nonzero) digits is 980, while the sum is 25.

The square root of 77401105 is about 8797.7897792571. The cubic root of 77401105 is about 426.1695215318.

The spelling of 77401105 in words is "seventy-seven million, four hundred one thousand, one hundred five".