87457641 has 4 divisors (see below), whose sum is σ = 116610192. Its totient is φ = 58305092.

The previous prime is 87457631. The next prime is 87457651. The reversal of 87457641 is 14675478.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (87457631) and next prime (87457651).

It is a cyclic number.

It is not a de Polignac number, because 87457641 - 2¹³ = 87449449 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 87457593 and 87457602.

It is not an unprimeable number, because it can be changed into a prime (87457631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14576271 + ... + 14576276.

It is an arithmetic number, because the mean of its divisors is an integer number (29152548).

Almost surely, 2^87457641 is an apocalyptic number.

It is an amenable number.

87457641 is a deficient number, since it is larger than the sum of its proper divisors (29152551).

87457641 is a wasteful number, since it uses less digits than its factorization.

87457641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29152550.

The product of its digits is 188160, while the sum is 42.

The square root of 87457641 is about 9351.8790090548. The cubic root of 87457641 is about 443.8803498305.

The spelling of 87457641 in words is "eighty-seven million, four hundred fifty-seven thousand, six hundred forty-one".