1261634 has 8 divisors (see below), whose sum is σ = 2064528. Its totient is φ = 573460.

The previous prime is 1261627. The next prime is 1261639. The reversal of 1261634 is 4361621.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (1261639) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28652 + ... + 28695.

It is an arithmetic number, because the mean of its divisors is an integer number (258066).

2^1261634 is an apocalyptic number.

1261634 is a deficient number, since it is larger than the sum of its proper divisors (802894).

1261634 is a wasteful number, since it uses less digits than its factorization.

1261634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57360.

The product of its digits is 864, while the sum is 23.

The square root of 1261634 is about 1123.2248216631. The cubic root of 1261634 is about 108.0548989293.

The spelling of 1261634 in words is "one million, two hundred sixty-one thousand, six hundred thirty-four".