77240481 has 16 divisors (see below), whose sum is σ = 105009408. Its totient is φ = 50490000.

The previous prime is 77240473. The next prime is 77240489. The reversal of 77240481 is 18404277.

It is an interprime number because it is at equal distance from previous prime (77240473) and next prime (77240489).

It is not a de Polignac number, because 77240481 - 2³ = 77240473 is a prime.

It is a super-2 number, since 2×77240481² = 11932183810222722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (77240489) 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 15 ways as a sum of consecutive naturals, for example, 49686 + ... + 51216.

It is an arithmetic number, because the mean of its divisors is an integer number (6563088).

Almost surely, 2^77240481 is an apocalyptic number.

It is an amenable number.

77240481 is a deficient number, since it is larger than the sum of its proper divisors (27768927).

77240481 is a wasteful number, since it uses less digits than its factorization.

77240481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1852.

The product of its (nonzero) digits is 12544, while the sum is 33.

The square root of 77240481 is about 8788.6563819505. The cubic root of 77240481 is about 425.8745194578.

The spelling of 77240481 in words is "seventy-seven million, two hundred forty thousand, four hundred eighty-one".