87377490 has 24 divisors (see below), whose sum is σ = 227181708. Its totient is φ = 23300640.

The previous prime is 87377489. The next prime is 87377491. The reversal of 87377490 is 9477378.

It is an interprime number because it is at equal distance from previous prime (87377489) and next prime (87377491).

It can be written as a sum of positive squares in 2 ways, for example, as 82137969 + 5239521 = 9063^2 + 2289^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (87377491) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 485341 + ... + 485520.

Almost surely, 2^87377490 is an apocalyptic number.

87377490 is an abundant number, since it is smaller than the sum of its proper divisors (139804218).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87377490 is a wasteful number, since it uses less digits than its factorization.

87377490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 970874 (or 970871 counting only the distinct ones).

The product of its (nonzero) digits is 296352, while the sum is 45.

The square root of 87377490 is about 9347.5927382402. The cubic root of 87377490 is about 443.7447095845.

The spelling of 87377490 in words is "eighty-seven million, three hundred seventy-seven thousand, four hundred ninety".