71949895 has 8 divisors (see below), whose sum is σ = 87523056. Its totient is φ = 56771136.

The previous prime is 71949887. The next prime is 71949907. The reversal of 71949895 is 59894917.

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 71949895 - 2³ = 71949887 is a prime.

It is a super-2 number, since 2×71949895² = 10353574781022050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98197 + ... + 98926.

It is an arithmetic number, because the mean of its divisors is an integer number (10940382).

Almost surely, 2^71949895 is an apocalyptic number.

71949895 is a deficient number, since it is larger than the sum of its proper divisors (15573161).

71949895 is a wasteful number, since it uses less digits than its factorization.

71949895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197201.

The product of its digits is 816480, while the sum is 52.

The square root of 71949895 is about 8482.3283949633. The cubic root of 71949895 is about 415.9202398089.

The spelling of 71949895 in words is "seventy-one million, nine hundred forty-nine thousand, eight hundred ninety-five".