35980721 has 16 divisors (see below), whose sum is σ = 43877376. Its totient is φ = 28801536.

The previous prime is 35980697. The next prime is 35980727. The reversal of 35980721 is 12708953.

It is not a de Polignac number, because 35980721 - 2¹⁴ = 35964337 is a prime.

It is a super-2 number, since 2×35980721² = 2589224567359682, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (35980727) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15200 + ... + 17406.

It is an arithmetic number, because the mean of its divisors is an integer number (2742336).

Almost surely, 2^35980721 is an apocalyptic number.

It is an amenable number.

35980721 is a deficient number, since it is larger than the sum of its proper divisors (7896655).

35980721 is a wasteful number, since it uses less digits than its factorization.

35980721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2368.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 35980721 is about 5998.3932015166. The cubic root of 35980721 is about 330.1337719058.

The spelling of 35980721 in words is "thirty-five million, nine hundred eighty thousand, seven hundred twenty-one".