60978390 has 64 divisors (see below), whose sum is σ = 160496640. Its totient is φ = 14704640.

The previous prime is 60978389. The next prime is 60978397. The reversal of 60978390 is 9387906.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (60978397) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 84451 + ... + 85169.

It is an arithmetic number, because the mean of its divisors is an integer number (2507760).

Almost surely, 2^60978390 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 60978390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80248320).

60978390 is an abundant number, since it is smaller than the sum of its proper divisors (99518250).

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

60978390 is a wasteful number, since it uses less digits than its factorization.

60978390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 997.

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

The square root of 60978390 is about 7808.8661148722. The cubic root of 60978390 is about 393.6032277356.

The spelling of 60978390 in words is "sixty million, nine hundred seventy-eight thousand, three hundred ninety".