77400213 has 8 divisors (see below), whose sum is σ = 112582176. Its totient is φ = 46909200.

The previous prime is 77400199. The next prime is 77400223. The reversal of 77400213 is 31200477.

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

It is not a de Polignac number, because 77400213 - 2⁵ = 77400181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77400223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1172698 + ... + 1172763.

It is an arithmetic number, because the mean of its divisors is an integer number (14072772).

Almost surely, 2^77400213 is an apocalyptic number.

It is an amenable number.

77400213 is a deficient number, since it is larger than the sum of its proper divisors (35181963).

77400213 is a wasteful number, since it uses less digits than its factorization.

77400213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2345475.

The product of its (nonzero) digits is 1176, while the sum is 24.

The square root of 77400213 is about 8797.7390845603. The cubic root of 77400213 is about 426.1678844119.

The spelling of 77400213 in words is "seventy-seven million, four hundred thousand, two hundred thirteen".