86952978 has 24 divisors (see below), whose sum is σ = 215312448. Its totient is φ = 24843672.

The previous prime is 86952967. The next prime is 86952989. The reversal of 86952978 is 87925968.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (86952967) and next prime (86952989).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 344926 + ... + 345177.

It is an arithmetic number, because the mean of its divisors is an integer number (8971352).

Almost surely, 2^86952978 is an apocalyptic number.

86952978 is an abundant number, since it is smaller than the sum of its proper divisors (128359470).

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

86952978 is a wasteful number, since it uses less digits than its factorization.

86952978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690118 (or 690115 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 54.

The square root of 86952978 is about 9324.8580686250. The cubic root of 86952978 is about 443.0249176214.

The spelling of 86952978 in words is "eighty-six million, nine hundred fifty-two thousand, nine hundred seventy-eight".