997235470 has 256 divisors, whose sum is σ = 2553016320. Its totient is φ = 270950400.

The previous prime is 997235411. The next prime is 997235527. The reversal of 997235470 is 74532799.

997235470 = T₉₇₃₅ + T₉₇₃₆ + ... + T₉₇₅₅.

997235470 is a nontrivial binomial coefficient, being equal to C(44660, 2).

It is a super-2 number, since 2×997235470² = 1988957165252241800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 997235470.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 14045535 + ... + 14045605.

It is an arithmetic number, because the mean of its divisors is an integer number (9972720).

Almost surely, 2^997235470 is an apocalyptic number.

997235470 is the 44659-th triangular number and also the 22330-th hexagonal number.

997235470 is the 14887-th centered nonagonal number.

997235470 is an abundant number, since it is smaller than the sum of its proper divisors (1555780850).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

997235470 is a wasteful number, since it uses less digits than its factorization.

997235470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179.

The product of its (nonzero) digits is 476280, while the sum is 46.

The square root of 997235470 is about 31579.0352924215. The cubic root of 997235470 is about 999.0776395127.

The spelling of 997235470 in words is "nine hundred ninety-seven million, two hundred thirty-five thousand, four hundred seventy".