987061421 has 8 divisors (see below), whose sum is σ = 1020960000. Its totient is φ = 953291520.

The previous prime is 987061417. The next prime is 987061423. The reversal of 987061421 is 124160789.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 987061421 - 2² = 987061417 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (987061423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16436 + ... + 47373.

It is an arithmetic number, because the mean of its divisors is an integer number (127620000).

Almost surely, 2^987061421 is an apocalyptic number.

It is an amenable number.

987061421 is a deficient number, since it is larger than the sum of its proper divisors (33898579).

987061421 is a wasteful number, since it uses less digits than its factorization.

987061421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64339.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 987061421 is about 31417.5336555879. The cubic root of 987061421 is about 995.6684047064.

The spelling of 987061421 in words is "nine hundred eighty-seven million, sixty-one thousand, four hundred twenty-one".