87773091 has 16 divisors (see below), whose sum is σ = 141617664. Its totient is φ = 47205504.

The previous prime is 87773071. The next prime is 87773093. The reversal of 87773091 is 19037778.

It is a happy number.

It is not a de Polignac number, because 87773091 - 2⁷ = 87772963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87773093) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 122575 + ... + 123288.

It is an arithmetic number, because the mean of its divisors is an integer number (8851104).

Almost surely, 2^87773091 is an apocalyptic number.

87773091 is a deficient number, since it is larger than the sum of its proper divisors (53844573).

87773091 is a wasteful number, since it uses less digits than its factorization.

87773091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245890.

The product of its (nonzero) digits is 74088, while the sum is 42.

The square root of 87773091 is about 9368.7294229260. The cubic root of 87773091 is about 444.4133851883.

The spelling of 87773091 in words is "eighty-seven million, seven hundred seventy-three thousand, ninety-one".