77220801 has 12 divisors (see below), whose sum is σ = 127475712. Its totient is φ = 44126136.

The previous prime is 77220791. The next prime is 77220811. The reversal of 77220801 is 10802277.

It is an interprime number because it is at equal distance from previous prime (77220791) and next prime (77220811).

It is not a de Polignac number, because 77220801 - 2⁹ = 77220289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (77220811) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 612801 + ... + 612926.

It is an arithmetic number, because the mean of its divisors is an integer number (10622976).

Almost surely, 2^77220801 is an apocalyptic number.

It is an amenable number.

77220801 is a deficient number, since it is larger than the sum of its proper divisors (50254911).

77220801 is a wasteful number, since it uses less digits than its factorization.

77220801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1225740 (or 1225737 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 27.

The square root of 77220801 is about 8787.5366855564. The cubic root of 77220801 is about 425.8383470504.

The spelling of 77220801 in words is "seventy-seven million, two hundred twenty thousand, eight hundred one".