1401707690 has 16 divisors (see below), whose sum is σ = 2530566792. Its totient is φ = 559017984.

The previous prime is 1401707641. The next prime is 1401707711. The reversal of 1401707690 is 967071041.

It can be written as a sum of positive squares in 4 ways, for example, as 1089726121 + 311981569 = 33011^2 + 17663^2 .

It is a super-2 number, since 2×1401707690² = 3929568896410272200, 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 1401707690.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 204599 + ... + 211338.

Almost surely, 2^1401707690 is an apocalyptic number.

1401707690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1401707690 is a deficient number, since it is larger than the sum of its proper divisors (1128859102).

1401707690 is a wasteful number, since it uses less digits than its factorization.

1401707690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416281.

The product of its (nonzero) digits is 10584, while the sum is 35.

The square root of 1401707690 is about 37439.3868806635. The cubic root of 1401707690 is about 1119.1436082007.

The spelling of 1401707690 in words is "one billion, four hundred one million, seven hundred seven thousand, six hundred ninety".