35987021 has 6 divisors (see below), whose sum is σ = 41862510. Its totient is φ = 30845976.

The previous prime is 35986987. The next prime is 35987027. The reversal of 35987021 is 12078953.

It can be written as a sum of positive squares in only one way, i.e., 29278921 + 6708100 = 5411^2 + 2590^2 .

It is not a de Polignac number, because 35987021 - 2¹⁴ = 35970637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (35987027) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 367166 + ... + 367263.

It is an arithmetic number, because the mean of its divisors is an integer number (6977085).

Almost surely, 2^35987021 is an apocalyptic number.

It is an amenable number.

35987021 is a deficient number, since it is larger than the sum of its proper divisors (5875489).

35987021 is an equidigital number, since it uses as much as digits as its factorization.

35987021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 734443 (or 734436 counting only the distinct ones).

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

The square root of 35987021 is about 5998.9183191639. The cubic root of 35987021 is about 330.1530389033.

The spelling of 35987021 in words is "thirty-five million, nine hundred eighty-seven thousand, twenty-one".