87262650477 has 24 divisors (see below), whose sum is σ = 130427331840. Its totient is φ = 56154043680.

The previous prime is 87262650457. The next prime is 87262650499. The reversal of 87262650477 is 77405626278.

87262650477 is a `hidden beast` number, since 8 + 7 + 2 + 62 + 6 + 504 + 77 = 666.

It is not a de Polignac number, because 87262650477 - 2¹⁴ = 87262634093 is a prime.

It is a super-2 number, since 2×87262650477² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87262650457) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 978028 + ... + 1063514.

It is an arithmetic number, because the mean of its divisors is an integer number (5434472160).

Almost surely, 2^87262650477 is an apocalyptic number.

87262650477 is a gapful number since it is divisible by the number (87) formed by its first and last digit.

It is an amenable number.

87262650477 is a deficient number, since it is larger than the sum of its proper divisors (43164681363).

87262650477 is a wasteful number, since it uses less digits than its factorization.

87262650477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89433 (or 89430 counting only the distinct ones).

The product of its (nonzero) digits is 7902720, while the sum is 54.

The spelling of 87262650477 in words is "eighty-seven billion, two hundred sixty-two million, six hundred fifty thousand, four hundred seventy-seven".