60990387 has 4 divisors (see below), whose sum is σ = 81320520. Its totient is φ = 40660256.

The previous prime is 60990367. The next prime is 60990389. The reversal of 60990387 is 78309906.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 60990387 - 2⁸ = 60990131 is a prime.

It is not an unprimeable number, because it can be changed into a prime (60990389) 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, 10165062 + ... + 10165067.

It is an arithmetic number, because the mean of its divisors is an integer number (20330130).

Almost surely, 2^60990387 is an apocalyptic number.

60990387 is a deficient number, since it is larger than the sum of its proper divisors (20330133).

60990387 is a wasteful number, since it uses less digits than its factorization.

60990387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20330132.

The product of its (nonzero) digits is 81648, while the sum is 42.

The square root of 60990387 is about 7809.6342423957. The cubic root of 60990387 is about 393.6290387827.

The spelling of 60990387 in words is "sixty million, nine hundred ninety thousand, three hundred eighty-seven".