77422145 has 16 divisors (see below), whose sum is σ = 97396992. Its totient is φ = 59015040.

The previous prime is 77422127. The next prime is 77422153. The reversal of 77422145 is 54122477.

It is not a de Polignac number, because 77422145 - 2¹⁴ = 77405761 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 4424 + ... + 13206.

It is an arithmetic number, because the mean of its divisors is an integer number (6087312).

Almost surely, 2^77422145 is an apocalyptic number.

It is an amenable number.

77422145 is a deficient number, since it is larger than the sum of its proper divisors (19974847).

77422145 is a wasteful number, since it uses less digits than its factorization.

77422145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8872.

The product of its digits is 15680, while the sum is 32.

The square root of 77422145 is about 8798.9854528803. The cubic root of 77422145 is about 426.2081333595.

The spelling of 77422145 in words is "seventy-seven million, four hundred twenty-two thousand, one hundred forty-five".