61703631 has 12 divisors (see below), whose sum is σ = 97230120. Its totient is φ = 37396080.

The previous prime is 61703617. The next prime is 61703633. The reversal of 61703631 is 13630716.

It is not a de Polignac number, because 61703631 - 2⁹ = 61703119 is a prime.

It is a super-2 number, since 2×61703631² = 7614676157168322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 61703595 and 61703604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61703633) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 311536 + ... + 311733.

It is an arithmetic number, because the mean of its divisors is an integer number (8102510).

Almost surely, 2^61703631 is an apocalyptic number.

61703631 is a deficient number, since it is larger than the sum of its proper divisors (35526489).

61703631 is a wasteful number, since it uses less digits than its factorization.

61703631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 623286 (or 623283 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 61703631 is about 7855.1658798526. The cubic root of 61703631 is about 395.1575102214.

It can be divided in two parts, 6170 and 3631, that added together give a square (9801 = 99²).

The spelling of 61703631 in words is "sixty-one million, seven hundred three thousand, six hundred thirty-one".