60721590 has 64 divisors (see below), whose sum is σ = 150898176. Its totient is φ = 15628032.

The previous prime is 60721589. The next prime is 60721601. The reversal of 60721590 is 9512706.

It is a super-2 number, since 2×60721590² = 7374222984256200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

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, 132642 + ... + 133098.

It is an arithmetic number, because the mean of its divisors is an integer number (2357784).

Almost surely, 2^60721590 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 60721590, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75449088).

60721590 is an abundant number, since it is smaller than the sum of its proper divisors (90176586).

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

60721590 is a wasteful number, since it uses less digits than its factorization.

60721590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 613.

The product of its (nonzero) digits is 3780, while the sum is 30.

The square root of 60721590 is about 7792.4059185851. The cubic root of 60721590 is about 393.0499195244.

The spelling of 60721590 in words is "sixty million, seven hundred twenty-one thousand, five hundred ninety".