87420347 has 8 divisors (see below), whose sum is σ = 101278176. Its totient is φ = 73904832.

The previous prime is 87420343. The next prime is 87420353. The reversal of 87420347 is 74302478.

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

It is a cyclic number.

It is not a de Polignac number, because 87420347 - 2² = 87420343 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87420343) 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, 85028 + ... + 86049.

It is an arithmetic number, because the mean of its divisors is an integer number (12659772).

Almost surely, 2^87420347 is an apocalyptic number.

87420347 is a deficient number, since it is larger than the sum of its proper divisors (13857829).

87420347 is a wasteful number, since it uses less digits than its factorization.

87420347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171157.

The product of its (nonzero) digits is 37632, while the sum is 35.

The square root of 87420347 is about 9349.8848656013. The cubic root of 87420347 is about 443.8172471782.

The spelling of 87420347 in words is "eighty-seven million, four hundred twenty thousand, three hundred forty-seven".