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61996761 = 3215234523
BaseRepresentation
bin1110110001111…
…1111011011001
311022122202120100
43230133323121
5111332344021
610052450013
71351651401
oct354377331
9138582510
1061996761
1131aa50a2
1218919909
13cac8a98
14833b801
155699626
hex3b1fed9

61996761 has 12 divisors (see below), whose sum is σ = 89629488. Its totient is φ = 41294904.

The previous prime is 61996757. The next prime is 61996769. The reversal of 61996761 is 16769916.

It is not a de Polignac number, because 61996761 - 22 = 61996757 is a prime.

It is a super-2 number, since 2×619967612 = 7687196748982242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61996769) 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, 11446 + ... + 15968.

It is an arithmetic number, because the mean of its divisors is an integer number (7469124).

Almost surely, 261996761 is an apocalyptic number.

It is an amenable number.

61996761 is a deficient number, since it is larger than the sum of its proper divisors (27632727).

61996761 is a wasteful number, since it uses less digits than its factorization.

61996761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6052 (or 6049 counting only the distinct ones).

The product of its digits is 122472, while the sum is 45.

The square root of 61996761 is about 7873.8021946198. The cubic root of 61996761 is about 395.7822685841.

The spelling of 61996761 in words is "sixty-one million, nine hundred ninety-six thousand, seven hundred sixty-one".

Divisors: 1 3 9 1523 4523 4569 13569 13707 40707 6888529 20665587 61996761