997059477 has 16 divisors (see below), whose sum is σ = 1350648000. Its totient is φ = 654129792.

The previous prime is 997059473. The next prime is 997059487. The reversal of 997059477 is 774950799.

It is not a de Polignac number, because 997059477 - 2² = 997059473 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997059473) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97399 + ... + 107147.

It is an arithmetic number, because the mean of its divisors is an integer number (84415500).

Almost surely, 2^997059477 is an apocalyptic number.

It is an amenable number.

997059477 is a deficient number, since it is larger than the sum of its proper divisors (353588523).

997059477 is a wasteful number, since it uses less digits than its factorization.

997059477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10292.

The product of its (nonzero) digits is 5000940, while the sum is 57.

The square root of 997059477 is about 31576.2486213926. The cubic root of 997059477 is about 999.0188633524.

The spelling of 997059477 in words is "nine hundred ninety-seven million, fifty-nine thousand, four hundred seventy-seven".