87854477 has 4 divisors (see below), whose sum is σ = 89091936. Its totient is φ = 86617020.

The previous prime is 87854471. The next prime is 87854489. The reversal of 87854477 is 77445878.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 87854477 - 2⁶ = 87854413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87854471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 618623 + ... + 618764.

It is an arithmetic number, because the mean of its divisors is an integer number (22272984).

Almost surely, 2^87854477 is an apocalyptic number.

It is an amenable number.

87854477 is a deficient number, since it is larger than the sum of its proper divisors (1237459).

87854477 is a wasteful number, since it uses less digits than its factorization.

87854477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1237458.

The product of its digits is 1756160, while the sum is 50.

The square root of 87854477 is about 9373.0719083980. The cubic root of 87854477 is about 444.5507008283.

It can be divided in two parts, 878 and 54477, that added together give a palindrome (55355).

The spelling of 87854477 in words is "eighty-seven million, eight hundred fifty-four thousand, four hundred seventy-seven".