77400105 has 8 divisors (see below), whose sum is σ = 123840192. Its totient is φ = 41280048.

The previous prime is 77400097. The next prime is 77400107. The reversal of 77400105 is 50100477.

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

It is not a de Polignac number, because 77400105 - 2³ = 77400097 is a prime.

It is a super-2 number, since 2×77400105² = 11981552508022050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (77400107) 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, 2579989 + ... + 2580018.

It is an arithmetic number, because the mean of its divisors is an integer number (15480024).

Almost surely, 2^77400105 is an apocalyptic number.

It is an amenable number.

77400105 is a deficient number, since it is larger than the sum of its proper divisors (46440087).

77400105 is a wasteful number, since it uses less digits than its factorization.

77400105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5160015.

The product of its (nonzero) digits is 980, while the sum is 24.

The square root of 77400105 is about 8797.7329466176. The cubic root of 77400105 is about 426.1676861948.

The spelling of 77400105 in words is "seventy-seven million, four hundred thousand, one hundred five".