1307690 has 8 divisors (see below), whose sum is σ = 2353860. Its totient is φ = 523072.

The previous prime is 1307689. The next prime is 1307693. The reversal of 1307690 is 967031.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1168561 + 139129 = 1081^2 + 373^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1307690² = 3420106272200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1307693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65375 + ... + 65394.

2^1307690 is an apocalyptic number.

1307690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1307690 is a deficient number, since it is larger than the sum of its proper divisors (1046170).

1307690 is a wasteful number, since it uses less digits than its factorization.

1307690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130776.

The product of its (nonzero) digits is 1134, while the sum is 26.

The square root of 1307690 is about 1143.5427407841. The cubic root of 1307690 is about 109.3540656533.

The spelling of 1307690 in words is "one million, three hundred seven thousand, six hundred ninety".