1970658 has 12 divisors (see below), whose sum is σ = 4269798. Its totient is φ = 656880.

The previous prime is 1970641. The next prime is 1970677. The reversal of 1970658 is 8560791.

It can be written as a sum of positive squares in only one way, i.e., 1896129 + 74529 = 1377^2 + 273^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 54723 + ... + 54758.

2^1970658 is an apocalyptic number.

1970658 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1970658 is an abundant number, since it is smaller than the sum of its proper divisors (2299140).

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

1970658 is a wasteful number, since it uses less digits than its factorization.

1970658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109489 (or 109486 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The square root of 1970658 is about 1403.8012679863. The cubic root of 1970658 is about 125.3729236505.

It can be divided in two parts, 1970 and 658, that added together give a triangular number (2628 = T₇₂).

The spelling of 1970658 in words is "one million, nine hundred seventy thousand, six hundred fifty-eight".