87070749 has 16 divisors (see below), whose sum is σ = 122503680. Its totient is φ = 54857520.

The previous prime is 87070717. The next prime is 87070759. The reversal of 87070749 is 94707078.

It is not a de Polignac number, because 87070749 - 2⁵ = 87070717 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 87070749.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87070759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24984 + ... + 28254.

It is an arithmetic number, because the mean of its divisors is an integer number (7656480).

Almost surely, 2^87070749 is an apocalyptic number.

It is an amenable number.

87070749 is a deficient number, since it is larger than the sum of its proper divisors (35432931).

87070749 is a wasteful number, since it uses less digits than its factorization.

87070749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3760.

The product of its (nonzero) digits is 98784, while the sum is 42.

The square root of 87070749 is about 9331.1708268577. The cubic root of 87070749 is about 443.2248415749.

The spelling of 87070749 in words is "eighty-seven million, seventy thousand, seven hundred forty-nine".