87061438 has 4 divisors (see below), whose sum is σ = 130592160. Its totient is φ = 43530718.

The previous prime is 87061433. The next prime is 87061453. The reversal of 87061438 is 83416078.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 87061397 and 87061406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87061433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21765358 + ... + 21765361.

It is an arithmetic number, because the mean of its divisors is an integer number (32648040).

Almost surely, 2^87061438 is an apocalyptic number.

87061438 is a deficient number, since it is larger than the sum of its proper divisors (43530722).

87061438 is a wasteful number, since it uses less digits than its factorization.

87061438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43530721.

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 87061438 is about 9330.6718943493. The cubic root of 87061438 is about 443.2090421105.

The spelling of 87061438 in words is "eighty-seven million, sixty-one thousand, four hundred thirty-eight".