87764403 has 8 divisors (see below), whose sum is σ = 117442768. Its totient is φ = 58297824.

The previous prime is 87764399. The next prime is 87764423. The reversal of 87764403 is 30446778.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 87764403 - 2² = 87764399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87764423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51976 + ... + 53637.

It is an arithmetic number, because the mean of its divisors is an integer number (14680346).

Almost surely, 2^87764403 is an apocalyptic number.

87764403 is a deficient number, since it is larger than the sum of its proper divisors (29678365).

87764403 is a wasteful number, since it uses less digits than its factorization.

87764403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105893.

The product of its (nonzero) digits is 112896, while the sum is 39.

The square root of 87764403 is about 9368.2657413205. The cubic root of 87764403 is about 444.3987216552.

The spelling of 87764403 in words is "eighty-seven million, seven hundred sixty-four thousand, four hundred three".