87223977 has 12 divisors (see below), whose sum is σ = 127717044. Its totient is φ = 57352320.

The previous prime is 87223951. The next prime is 87224051. The reversal of 87223977 is 77932278.

It can be written as a sum of positive squares in 2 ways, for example, as 48734361 + 38489616 = 6981^2 + 6204^2 .

It is not a de Polignac number, because 87223977 - 2¹⁰ = 87222953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87223937) 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, 65724 + ... + 67037.

It is an arithmetic number, because the mean of its divisors is an integer number (10643087).

Almost surely, 2^87223977 is an apocalyptic number.

It is an amenable number.

87223977 is a deficient number, since it is larger than the sum of its proper divisors (40493067).

87223977 is a wasteful number, since it uses less digits than its factorization.

87223977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132840 (or 132837 counting only the distinct ones).

The product of its digits is 296352, while the sum is 45.

The square root of 87223977 is about 9339.3777629990. The cubic root of 87223977 is about 443.4846864209.

The spelling of 87223977 in words is "eighty-seven million, two hundred twenty-three thousand, nine hundred seventy-seven".