60691290 has 64 divisors (see below), whose sum is σ = 159656832. Its totient is φ = 14643200.

The previous prime is 60691289. The next prime is 60691313. The reversal of 60691290 is 9219606.

60691290 = 3482² + 3483² + ... + 3486².

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 116230 + ... + 116750.

It is an arithmetic number, because the mean of its divisors is an integer number (2494638).

Almost surely, 2^60691290 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 60691290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79828416).

60691290 is an abundant number, since it is smaller than the sum of its proper divisors (98965542).

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

60691290 is a wasteful number, since it uses less digits than its factorization.

60691290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 895.

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 60691290 is about 7790.4614754198. The cubic root of 60691290 is about 392.9845315021.

The spelling of 60691290 in words is "sixty million, six hundred ninety-one thousand, two hundred ninety".