61263690 has 16 divisors (see below), whose sum is σ = 147032928. Its totient is φ = 16336976.

The previous prime is 61263667. The next prime is 61263731. The reversal of 61263690 is 9636216.

It is a happy number.

It is a super-2 number, since 2×61263690² = 7506479424832200, which contains 22 as substring.

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, 1021032 + ... + 1021091.

It is an arithmetic number, because the mean of its divisors is an integer number (9189558).

Almost surely, 2^61263690 is an apocalyptic number.

61263690 is an abundant number, since it is smaller than the sum of its proper divisors (85769238).

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

61263690 is a wasteful number, since it uses less digits than its factorization.

61263690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2042133.

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 61263690 is about 7827.1124944005. The cubic root of 61263690 is about 394.2161242218.

The spelling of 61263690 in words is "sixty-one million, two hundred sixty-three thousand, six hundred ninety".