697871970 has 64 divisors (see below), whose sum is σ = 1886538240. Its totient is φ = 183544704.

The previous prime is 697871963. The next prime is 697871987. The reversal of 697871970 is 79178796.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2007 + ... + 37413.

It is an arithmetic number, because the mean of its divisors is an integer number (29477160).

Almost surely, 2^697871970 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 697871970, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (943269120).

697871970 is an abundant number, since it is smaller than the sum of its proper divisors (1188666270).

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

697871970 is a wasteful number, since it uses less digits than its factorization.

697871970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35496 (or 35490 counting only the distinct ones).

The product of its (nonzero) digits is 1333584, while the sum is 54.

The square root of 697871970 is about 26417.2665126428. The cubic root of 697871970 is about 887.0033330285.

The spelling of 697871970 in words is "six hundred ninety-seven million, eight hundred seventy-one thousand, nine hundred seventy".