87764655001 has 3 divisors (see below), whose sum is σ = 87764951253. Its totient is φ = 87764358750.

The previous prime is 87764654963. The next prime is 87764655059. The reversal of 87764655001 is 10055646778.

It is a happy number.

The square root of 87764655001 is 296251.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 87764655001 - 2²⁷ = 87630437273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87764655061) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 148126 + ... + 444376.

It is an arithmetic number, because the mean of its divisors is an integer number (29254983751).

Almost surely, 2^87764655001 is an apocalyptic number.

87764655001 is the 296251-st square number.

87764655001 is the 148126-th centered octagonal number.

It is an amenable number.

87764655001 is a deficient number, since it is larger than the sum of its proper divisors (296252).

87764655001 is an frugal number, since it uses more digits than its factorization.

87764655001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 592502 (or 296251 counting only the distinct ones).

The product of its (nonzero) digits is 1411200, while the sum is 49.

Multiplying 87764655001 by its sum of digits (49), we get a square (4300468095049 = 2073757²).

The spelling of 87764655001 in words is "eighty-seven billion, seven hundred sixty-four million, six hundred fifty-five thousand, one".