76948981 has 2 divisors, whose sum is σ = 76948982. Its totient is φ = 76948980.

The previous prime is 76948969. The next prime is 76949003. The reversal of 76948981 is 18984967.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54538225 + 22410756 = 7385^2 + 4734^2 .

It is an emirp because it is prime and its reverse (18984967) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 76948981 - 2⁷ = 76948853 is a prime.

It is a super-2 number, since 2×76948981² = 11842291353876722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76948901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38474490 + 38474491.

It is an arithmetic number, because the mean of its divisors is an integer number (38474491).

Almost surely, 2^76948981 is an apocalyptic number.

It is an amenable number.

76948981 is a deficient number, since it is larger than the sum of its proper divisors (1).

76948981 is an equidigital number, since it uses as much as digits as its factorization.

76948981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 870912, while the sum is 52.

The square root of 76948981 is about 8772.0568283613. The cubic root of 76948981 is about 425.3381041946.

The spelling of 76948981 in words is "seventy-six million, nine hundred forty-eight thousand, nine hundred eighty-one".