77228195 has 32 divisors (see below), whose sum is σ = 107951616. Its totient is φ = 52416000.

The previous prime is 77228171. The next prime is 77228197. The reversal of 77228195 is 59182277.

It is not a de Polignac number, because 77228195 - 2¹⁸ = 76966051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77228197) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 140912 + ... + 141458.

It is an arithmetic number, because the mean of its divisors is an integer number (3373488).

Almost surely, 2^77228195 is an apocalyptic number.

77228195 is a deficient number, since it is larger than the sum of its proper divisors (30723421).

77228195 is a wasteful number, since it uses less digits than its factorization.

77228195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 731.

The product of its digits is 70560, while the sum is 41.

The square root of 77228195 is about 8787.9573849672. The cubic root of 77228195 is about 425.8519381563.

The spelling of 77228195 in words is "seventy-seven million, two hundred twenty-eight thousand, one hundred ninety-five".