87770481 has 16 divisors (see below), whose sum is σ = 123402240. Its totient is φ = 55337040.

The previous prime is 87770467. The next prime is 87770503. The reversal of 87770481 is 18407778.

It is not a de Polignac number, because 87770481 - 2¹⁴ = 87754097 is a prime.

It is a super-2 number, since 2×87770481² = 15407314669942722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (87770581) 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, 45976 + ... + 47846.

It is an arithmetic number, because the mean of its divisors is an integer number (7712640).

Almost surely, 2^87770481 is an apocalyptic number.

It is an amenable number.

87770481 is a deficient number, since it is larger than the sum of its proper divisors (35631759).

87770481 is a wasteful number, since it uses less digits than its factorization.

87770481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2716.

The product of its (nonzero) digits is 87808, while the sum is 42.

The square root of 87770481 is about 9368.5901287227. The cubic root of 87770481 is about 444.4089801540.

The spelling of 87770481 in words is "eighty-seven million, seven hundred seventy thousand, four hundred eighty-one".