35978 has 4 divisors (see below), whose sum is σ = 53970. Its totient is φ = 17988.

The previous prime is 35977. The next prime is 35983. The reversal of 35978 is 87953.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 87953 = 281 ⋅313.

It can be written as a sum of positive squares in only one way, i.e., 26569 + 9409 = 163^2 + 97^2 .

It is a d-powerful number, because it can be written as 3³ + 5⁵ + 9 + 7² + 8⁵ .

It is not an unprimeable number, because it can be changed into a prime (35977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8993 + ... + 8996.

2³⁵⁹⁷⁸ is an apocalyptic number.

35978 is a deficient number, since it is larger than the sum of its proper divisors (17992).

35978 is a wasteful number, since it uses less digits than its factorization.

35978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17991.

The product of its digits is 7560, while the sum is 32.

The square root of 35978 is about 189.6786756597. The cubic root of 35978 is about 33.0125449702.

The spelling of 35978 in words is "thirty-five thousand, nine hundred seventy-eight".