71974797 has 8 divisors (see below), whose sum is σ = 100138944. Its totient is φ = 45896928.

The previous prime is 71974789. The next prime is 71974823. The reversal of 71974797 is 79747917.

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

It is not a de Polignac number, because 71974797 - 2³ = 71974789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71974757) 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, 521488 + ... + 521625.

It is an arithmetic number, because the mean of its divisors is an integer number (12517368).

Almost surely, 2^71974797 is an apocalyptic number.

It is an amenable number.

71974797 is a deficient number, since it is larger than the sum of its proper divisors (28164147).

71974797 is a wasteful number, since it uses less digits than its factorization.

71974797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1043139.

The product of its digits is 777924, while the sum is 51.

The square root of 71974797 is about 8483.7961432368. The cubic root of 71974797 is about 415.9682178783.

It can be divided in two parts, 71974 and 797, that added together give a triangular number (72771 = T₃₈₁).

The spelling of 71974797 in words is "seventy-one million, nine hundred seventy-four thousand, seven hundred ninety-seven".