87628349 has 4 divisors (see below), whose sum is σ = 88318464. Its totient is φ = 86938236.

The previous prime is 87628339. The next prime is 87628363. The reversal of 87628349 is 94382678.

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 a cyclic number.

It is not a de Polignac number, because 87628349 - 2¹² = 87624253 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87628339) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 344867 + ... + 345120.

It is an arithmetic number, because the mean of its divisors is an integer number (22079616).

Almost surely, 2^87628349 is an apocalyptic number.

It is an amenable number.

87628349 is a deficient number, since it is larger than the sum of its proper divisors (690115).

87628349 is a wasteful number, since it uses less digits than its factorization.

87628349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690114.

The product of its digits is 580608, while the sum is 47.

The square root of 87628349 is about 9361.0014955666. The cubic root of 87628349 is about 444.1689645184.

The spelling of 87628349 in words is "eighty-seven million, six hundred twenty-eight thousand, three hundred forty-nine".