87247961 has 16 divisors (see below), whose sum is σ = 96526080. Its totient is φ = 78508800.

The previous prime is 87247957. The next prime is 87247967. The reversal of 87247961 is 16974278.

It is a cyclic number.

It is not a de Polignac number, because 87247961 - 2² = 87247957 is a prime.

It is a super-2 number, since 2×87247961² = 15224413397315042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87247967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35936 + ... + 38286.

It is an arithmetic number, because the mean of its divisors is an integer number (6032880).

Almost surely, 2^87247961 is an apocalyptic number.

It is an amenable number.

87247961 is a deficient number, since it is larger than the sum of its proper divisors (9278119).

87247961 is a wasteful number, since it uses less digits than its factorization.

87247961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2464.

The product of its digits is 169344, while the sum is 44.

The square root of 87247961 is about 9340.6617003294. The cubic root of 87247961 is about 443.5253310629.

The spelling of 87247961 in words is "eighty-seven million, two hundred forty-seven thousand, nine hundred sixty-one".