81496037 has 8 divisors (see below), whose sum is σ = 93408000. Its totient is φ = 69651504.

The previous prime is 81496021. The next prime is 81496039. The reversal of 81496037 is 73069418.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 81496037 - 2⁴ = 81496021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81496039) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14237 + ... + 19122.

It is an arithmetic number, because the mean of its divisors is an integer number (11676000).

Almost surely, 2^81496037 is an apocalyptic number.

It is an amenable number.

81496037 is a deficient number, since it is larger than the sum of its proper divisors (11911963).

81496037 is a wasteful number, since it uses less digits than its factorization.

81496037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33715.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 81496037 is about 9027.5155496958. The cubic root of 81496037 is about 433.5562954507.

It can be divided in two parts, 8149603 and 7, that multiplied together give a triangular number (57047221 = T₁₀₆₈₁).

The spelling of 81496037 in words is "eighty-one million, four hundred ninety-six thousand, thirty-seven".