81462693 has 8 divisors (see below), whose sum is σ = 116972128. Its totient is φ = 50130864.

The previous prime is 81462677. The next prime is 81462697. The reversal of 81462693 is 39626418.

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

It is not a de Polignac number, because 81462693 - 2⁴ = 81462677 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 2088787 = 81462693 / (8 + 1 + 4 + 6 + 2 + 6 + 9 + 3).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81462697) 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 7 ways as a sum of consecutive naturals, for example, 1044355 + ... + 1044432.

It is an arithmetic number, because the mean of its divisors is an integer number (14621516).

Almost surely, 2^81462693 is an apocalyptic number.

It is an amenable number.

81462693 is a deficient number, since it is larger than the sum of its proper divisors (35509435).

81462693 is a wasteful number, since it uses less digits than its factorization.

81462693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2088803.

The product of its digits is 62208, while the sum is 39.

The square root of 81462693 is about 9025.6685624944. The cubic root of 81462693 is about 433.4971577155.

The spelling of 81462693 in words is "eighty-one million, four hundred sixty-two thousand, six hundred ninety-three".