77201493 has 4 divisors (see below), whose sum is σ = 102935328. Its totient is φ = 51467660.

The previous prime is 77201489. The next prime is 77201533. The reversal of 77201493 is 39410277.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 39410277 = 3 ⋅13136759.

It is a cyclic number.

It is not a de Polignac number, because 77201493 - 2² = 77201489 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77201473) 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, 12866913 + ... + 12866918.

It is an arithmetic number, because the mean of its divisors is an integer number (25733832).

Almost surely, 2^77201493 is an apocalyptic number.

It is an amenable number.

77201493 is a deficient number, since it is larger than the sum of its proper divisors (25733835).

77201493 is a wasteful number, since it uses less digits than its factorization.

77201493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25733834.

The product of its (nonzero) digits is 10584, while the sum is 33.

The square root of 77201493 is about 8786.4380154873. The cubic root of 77201493 is about 425.8028524165.

The spelling of 77201493 in words is "seventy-seven million, two hundred one thousand, four hundred ninety-three".