77247141 has 12 divisors (see below), whose sum is σ = 108703872. Its totient is φ = 48786984.

The previous prime is 77247127. The next prime is 77247143. The reversal of 77247141 is 14174277.

It is a de Polignac number, because none of the positive numbers 2^k-77247141 is a prime.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77247143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34581 + ... + 36746.

It is an arithmetic number, because the mean of its divisors is an integer number (9058656).

Almost surely, 2^77247141 is an apocalyptic number.

It is an amenable number.

77247141 is a deficient number, since it is larger than the sum of its proper divisors (31456731).

77247141 is a wasteful number, since it uses less digits than its factorization.

77247141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71368 (or 71349 counting only the distinct ones).

The product of its digits is 10976, while the sum is 33.

The square root of 77247141 is about 8789.0352712912. The cubic root of 77247141 is about 425.8867593384.

The spelling of 77247141 in words is "seventy-seven million, two hundred forty-seven thousand, one hundred forty-one".